Jeg venter på en opdatering, før jeg prøver at logge ind igen.

In Danish, at vente på means to wait for something.

• Jeg venter. = I am waiting.
• Jeg venter på en opdatering. = I am waiting for an update.

So på is required here because the sentence includes the thing being waited for.

Because opdatering is a common gender noun in Danish, so it takes en.

• en opdatering
• definite form: opdateringen

This is something you generally have to learn with each noun, since Danish nouns are either en-words or et-words.

Opdatering usually means update, and it can mean different things depending on context, for example:

• a software/system update
• new information
• a status update

In this sentence, because of før jeg prøver at logge ind igen (before I try to log in again), it most naturally sounds like some kind of technical or system-related update, but the exact meaning depends on context.

In Danish, commas are commonly used before subordinate clauses, and før can introduce one.

Here:

• main clause: Jeg venter på en opdatering
• subordinate clause: før jeg prøver at logge ind igen

So the comma helps mark the boundary between the two clauses. This is very normal in written Danish.

Because før introduces a subordinate clause, and in Danish subordinate clauses, the word order is usually more like standard subject-verb order:

• før jeg prøver
• because I try / before I try

Inversion like prøver jeg is common in main clauses after something has been placed first, but not here.

Because at prøve at + infinitive is a very common Danish structure meaning to try to do something.

So:

• jeg prøver at logge ind = I try to log in

You can think of it as:

• prøver = try
• at logge ind = to log in

This pattern is extremely common:

• Jeg prøver at forstå det. = I’m trying to understand it.
• Hun prøver at sove. = She is trying to sleep.

It functions as a verb expression meaning to log in.

• at logge ind = to log in
• jeg logger ind = I log in / am logging in

It is similar to English phrasal verbs. Logge is the main verb, and ind is a particle that belongs with it.

Igen means again, and in this sentence it comes after the verb phrase:

• at logge ind igen = to log in again

That is a very natural placement in Danish. It modifies the action of logging in.

You may also see igen in other positions in Danish, but here the final position is straightforward and idiomatic.

Usually, yes. In this sentence, igen clearly means again: the person has logged in before and wants to do it one more time.

In some contexts, igen can also mean something like back or in return, but again is the right meaning here.

Because Danish often uses the present tense for actions that are happening now or are planned/expected, just like English often does.

So this sentence means something like:

• I’m waiting for an update before I try to log in again.

The waiting is happening now, and the trying will happen later, but Danish does not need a special future form here.

Yes, you could, but the tone changes a little.

• prøver at logge ind = more everyday, neutral, common in speech
• forsøger at logge ind = a bit more formal or deliberate

Both are correct, but prøver at logge ind sounds very natural in ordinary conversation.

Because prøver is a finite verb here, while logge is an infinitive.

• jeg prøver = I try → finite verb, no at
• at logge ind = to log in → infinitive, so at is used

This is similar to English:

• I try
• to log in

Yes. En opdatering can absolutely mean an update in the sense of new information.

For example:

• Jeg venter på en opdatering fra support. = I’m waiting for an update from support.
• Jeg venter på en opdatering af systemet. = I’m waiting for an update of the system.

So the noun itself is broad; the surrounding context tells you what kind of update is meant.