Оператор сказал, что в статусе заказа пока нет изменений.

Сказал is past tense, masculine singular. It agrees with оператор, which is grammatically masculine.

• оператор сказал = the operator said if the operator is grammatically treated as male
• оператор сказала would sound unusual unless you are deliberately referring to a female operator but still using the masculine noun оператор

In real life, Russian job titles are often masculine by default, even when talking about a woman, though agreement can vary depending on style and context.

Что here means that and introduces a subordinate clause.

So:

• Оператор сказал = The operator said
• что в статусе заказа пока нет изменений = that there are no changes in the order status yet

This is very common in Russian after verbs of speaking and thinking:

• Он сказал, что... = He said that...
• Я думаю, что... = I think that...

In English, that is often optional, but in Russian что is usually stated.

Because в here means in and refers to location, not direction. After в, Russian uses:

• Prepositional case for location: в статусе = in the status
• Accusative case for movement into something: в статус

Here there is no movement; it is about where the changes would appear. So статус becomes статусе.

Заказа is the genitive singular of заказ.

The phrase статус заказа means the status of the order. Russian often expresses X of Y by putting Y in the genitive:

• статус заказа = order status
• номер телефона = phone number
• цвет машины = the car’s color

So в статусе заказа literally means in the status of the order.

Literally, it means in the status of the order. In natural English, it usually means something like:

• in the order status
• regarding the order status
• in the current status information for the order

This is the kind of phrasing customer support uses. It sounds a little formal or bureaucratic in Russian, which fits the context.

Here пока means for now, so far, or yet.

So:

• пока нет изменений = there are no changes yet / so far

It suggests the situation may change later. Compare:

• нет изменений = there are no changes
• пока нет изменений = there are no changes yet / for now

This is a very common use of пока in status updates.

Because нет is the standard Russian way to say there is not / there are not.

• есть = there is / there are
• нет = there is not / there are not

So:

• есть изменения = there are changes
• нет изменений = there are no changes

Russian often uses this structure instead of something closer to English changes do not exist.

After нет, Russian normally uses the genitive case.

The base noun is:

• изменение = change
• plural nominative: изменения = changes

But after нет, it becomes genitive plural:

• нет изменений = there are no changes

This is an important pattern:

• нет времени = there is no time
• нет денег = there is no money
• нет проблем = there are no problems

It is genitive plural.

The dictionary form is изменение. Its plural nominative is изменения, but after нет you need genitive plural: изменений.

So the sentence means there are no changes, not there is no change. In practice, English and Russian may both translate this kind of phrase naturally depending on context, but grammatically the Russian form here is plural.

Yes. Russian word order is flexible, though the original sounds natural and neutral.

Original:

• Оператор сказал, что в статусе заказа пока нет изменений.

Possible variations:

• Оператор сказал, что пока в статусе заказа нет изменений.
• Оператор сказал, что изменений в статусе заказа пока нет.

These all mean roughly the same thing, but the emphasis changes a little:

• пока earlier can emphasize for now
• изменений earlier can emphasize changes

The original version is a normal, balanced way to say it.

Yes. Some simpler alternatives are:

• Оператор сказал, что статус заказа пока не изменился.
  = The operator said that the order status hasn’t changed yet.

• Оператор сказал, что пока изменений по заказу нет.
  = The operator said that there are no updates on the order yet.

• Оператор сказал, что заказ пока без изменений.
  = The operator said the order is unchanged for now.

The original sentence sounds like customer-service language, while these alternatives may sound a bit more direct.

In this context, оператор most likely means a customer service representative / support agent / call center operator.

Russian uses оператор in several meanings, but with a sentence about an order status, the most natural interpretation is a person working in support or at a service desk.