Blocked on Amazon seller central straight away

Hi everyone! Did anyone else have a similar issue? I am very desperate at this point since I couldn't find a solution to my problem anywhere. 

My business is based in Belgium and I decided to open an amazon.de account to start selling my goods. I provided all the necessary documents and went though all the verification steps. I was first blocked until I added a card, then my account was activated for a little bit, and in a few hours blocked again. Here is the translated message I received:
"Good day,
We were unable to verify the information you provided when you registered for a Sell on Amazon payment account. Therefore we cannot activate your "Sell on Amazon" payment account and unfortunately we cannot give you permission to sell your items on Amazon.
If you have any questions regarding the collection of data, please read our FAQs:
https://sellercentral-europe.amazon.com/gp/help/201200780
(Registration in Seller Central required)
Or contact the seller service:
https://sellercentral-europe.amazon.com/gp/contact-us/contact-amazon-form.html
Regards
Amazon Payments"

I have tried to submit all the documents I possibly had, confirming my identity, that I am linked to my business, documents confirming business registration and address, but nothing seems to be happening. The response was the information is insufficient, and then after a while Amazon stopped responding altogether. This is very frustrating since I didn't even have time to post any products or do anything. All the other European amazon stores are also suspended. 

I also tried to contact the support, but it automatically stops me by saying that my account is already suspended. Help for reactivating account send automatic reply that they can’t help with suspension.

Did anyone go through the same problem? And how would you handle it? 

Thank you very much in advance!