Crossprogression and account linking problems STEAM < > PS5

Hello Team,

I have two POE accounts, one that was created on Playstation years ago and another one via the website for the POE2 early access with the same e-mail adress. I have the POE2 EA (which is great) for Steam /PC and tried to link my SONY PSN account to with, which was a bit odd and seemed like it did not work.
The Sony linking process did not show me anything and was "connected" in a few seconds, so the POE-account-management said it is linked.
So I do not know if this is my correct and primary SONY PSN ID or a different one.
8 Days ago I bought the POE2 EA for PlayStation5 and hoped that I can use the cross-progress, but on PS5 it does not show me which POE2 user ID is used. On PC it shows an older POE1 ID and my new POE2 ID But not my any linked SONY PSN Account.
When playing POE2 on PS5 I can not start it on PC (Steam) and vice versa, but no cross-progression or character selection is possible.
On PS5 it even says that the POE2 EA is still possible to purchase.
Raised a ticket for GGG support on dec. 13th, still waiting if the tech support can help.

Can not even get my money back from Sony :/

What I did on PS5:

1. Create a new character.

2. Press start and log out.

3. Go back to the character select screen.

4. Press R3 to bring up the account selection BUT

NO account appears when hitting R3.
Just a notification about private leagues that can not be migrated.
Need help here, wanted to play on my vacation which started already and I am not able to do so.

Best regards

I have the same issue