Why are my verified Shopify payments being blocked again?

Hello
I would like to ask what I should do when I verified the shopify payments service, but then they called me saying that my payments were blocked and I have to verify the service again. What did I do wrong?

Hi, @jirkakuta .

Thank you for reaching out!

Do you see anything in your Shopify admin asking for forms or identification? Usually, you would receive an email or a banner would appear in your admin if we need further information from you.

Please let me know if you have any further questions! I would love to learn more about your business. What type of products do you sell?

Talk soon,

Thanks for your answer.
Before, I had a banner there that only said something about my payments being blocked, but it didn’t ask me for any forms. But today I don’t have anything there, so it probably works.

BTW: I still don’t know what product I will sell, I’m learning how to work with Shopify. But within a month I would like to choose a winning product and start selling