time clause test

[JarekSteliga]

When I tried to do this test English grammar - time clauses exercises 99% of my answers were marked as wrong. I wonder if they are actually unacceptable/awkward or just different from what the author of this test had in mind.

We'll send a message soon after we have got there. wrong
Right: Soon after we get there, we will send a message.

We are going to have a rest while being on holiday. wrong
Right: We are going to have a rest while we are on holiday.

He will not regret it until she has moved away. wrong
Right: He will not regret it until she moves away.

Can you water the flowers when we have left the house? wrong
Right: Can you water the flowers when we leave the house.

I will open the bottle the moment I have found the opener. wrong
Right: The moment I find the opener, I will open the bottle.

I'll come round after having finished my lesson by noon. wrong
Right: After I have finished my lesson by noon, I will come round.

[5jj]

We'll send a message soon after we have got there. wrongPossible.
We are going to have a rest while being on holiday. wrong Yes, it is wrong.
He will not regret it until she has moved away. wrong Possible.
Can you water the flowers when we have left the house? wrong Possible.
I will open the bottle the moment I have found the opener. wrongPossible
I'll come round after having finished my lesson by noon. wrong Yes, it is wrong.