Ο συνδρομητής πληρώνει είτε τέλος ενεργοποίησης είτε ανανέωση υπολοίπου.

Ο is the masculine singular definite article in the nominative case. It means the.

Here, ο συνδρομητής = the subscriber.

Greek articles change according to:

• gender
• number
• case

So ο tells you that συνδρομητής is:

• masculine
• singular
• the subject of the sentence

Συνδρομητής is a masculine noun meaning subscriber.

Its ending -ής is a common masculine noun ending in Greek. Many nouns of this type decline in a particular pattern, for example:

• nominative singular: ο συνδρομητής
• genitive singular: του συνδρομητή

In this sentence, ο συνδρομητής is the subject, so it appears in the nominative.

Πληρώνει is the 3rd person singular form of the verb πληρώνω (to pay).

So it means:

• he/she/it pays
• or, with a noun subject, the subscriber pays

Because Greek verb endings already show the person and number, you often do not need a subject pronoun. Here the subject is explicitly stated as ο συνδρομητής.

Είτε ... είτε ... means either ... or ....

So:

• είτε τέλος ενεργοποίησης είτε ανανέωση υπολοίπου = either an activation fee or a balance top-up/renewal

This is a fixed correlative structure in Greek, just like either ... or ... in English.

A learner should remember that both είτε words normally appear:

• before the first option
• and before the second option

Greek often omits the article where English might still use a/an or where the noun is understood in a general, non-specific sense.

So:

• πληρώνει είτε τέλος ενεργοποίησης είτε ανανέωση υπολοίπου

does not need to mean the activation fee or the balance renewal specifically. It can simply mean one of those kinds of payment.

If the sentence used articles, it could sound more specific depending on context:

• είτε το τέλος ενεργοποίησης είτε την ανανέωση υπολοίπου

But without articles, the phrase sounds more like naming the type of charge/payment.

Because ενεργοποίησης is in the genitive case.

Greek often uses the genitive where English uses of:

• τέλος ενεργοποίησης = activation fee
• literally: fee of activation

So the second noun explains what kind of fee it is.

This is a very common Greek pattern:

• κάρτα μνήμης = memory card
• τιμή εισιτηρίου = ticket price
• τέλος ενεργοποίησης = activation fee

Both are possible in Greek, but they do not feel exactly the same.

• ανανέωση υπολοίπου is a compact, category-style expression: balance renewal/top-up
• ανανέωση του υπολοίπου is more specific: renewal of the balance

In service, billing, or telecom language, Greek often prefers the shorter article-less phrase because it functions almost like a set term.

So here ανανέωση υπολοίπου is natural and idiomatic.

Yes. Υπολοίπου is the genitive singular form of υπόλοιπο.

Base form:

• το υπόλοιπο = the balance / remaining amount

In the sentence:

• ανανέωση υπολοίπου literally means
• renewal of balance

Again, this is the same genitive pattern seen in τέλος ενεργοποίησης.

This is a very good question.

Yes, direct objects normally are in the accusative in Greek. But here the forms you see are a bit deceptive:

• τέλος is actually the same in nominative and accusative singular
• ανανέωση is also the same in nominative and accusative singular

So these nouns are functioning as direct objects, but their accusative forms just happen to look identical to the nominative.

If you added articles, the accusative would become more obvious:

• πληρώνει το τέλος
• πληρώνει την ανανέωση

So yes, they are objects of πληρώνει, even though the noun endings do not visibly change here.

Yes. Greek word order is more flexible than English word order, because case endings and verb forms carry a lot of grammatical information.

The neutral order here is:

• Ο συνδρομητής πληρώνει είτε τέλος ενεργοποίησης είτε ανανέωση υπολοίπου.

But other orders may also be possible for emphasis, for example:

• Είτε τέλος ενεργοποίησης είτε ανανέωση υπολοίπου πληρώνει ο συνδρομητής.

That said, the original version is probably the most natural for straightforward written information.

In many real-world contexts, yes, it is often used in that sense.

Literally:

• ανανέωση = renewal
• υπόλοιπο = balance

But in telecom or prepaid service language, ανανέωση υπολοίπου is commonly understood as adding money/credit to the balance, so top-up is often the most natural English equivalent.

This is a good reminder that literal word-for-word translation is not always the best way to understand a phrase.

A rough pronunciation guide is:

O sindromitís pliróni íte télos energopíisis íte ananéosi ipolípou.

A few notes:

• συνδρομητής has the stress on the last syllable: -τής
• πληρώνει is stressed on ρώ
• είτε is stressed on the first syllable
• ενεργοποίησης is stressed on οί
• ανανέωση is stressed on νέ
• υπολοίπου is stressed on λοί

As always, the written accent mark in Greek shows you where the stress falls.

Yes, in other contexts είτε ... είτε ... can sometimes mean something closer to whether ... or ....

For example:

• Είτε έρθει είτε δεν έρθει, θα φύγουμε. = Whether he comes or not, we will leave.

But in your sentence, it clearly introduces two alternatives that can be paid, so either ... or ... is the right interpretation:

• either an activation fee or a balance top-up

So the exact translation depends on context, even though the Greek structure is the same.