Can't link my domain to my website.

My website worked fine for 3-4 months. Today I’ve opened my website and saw the message that my domain is not linked to my website.

I’ve entered my account and noticed that my site is not published. Then I published it via the editor, but I had still the same message appearing.
After all, I’ve unlinked my Wix domain and tried to link it again by clicking link the existing domain button, but unsuccessful. The error message appears and asks me to try in 2 minutes again.

Please, help me, guys. Maybe someone had the same problem. Is it possible that my domain is blocked and how can I know it? Thanks in advance.

You have posted your question in the Wix Corvid Forum for which is for all code related issues that you have with any code on your site.

As your question is about your Wix site being connected to your domain, then you should be going through Wix Support directly.
https://support.wix.com/en/article/contacting-wix-support

You can post a support ticket to them, however for your issue you might be better speaking to them directly over the telephone so that they can get it sorted out for you as soon as possible so that you can get your site back working.