Plugin set properly but after some days it returns to the first setup page

Hi support team! I set this plugin 2 weeks ago to show our products on Google. I provided all the information needed to run the Google Listings (WordPress Account, Google Account and Merchant Center except Ads because we don’t have an account).

According to it we had to wait 3-5 days before our products were shown on Google. But when we checked after that amount of days, the plugin took us again to the setup page. There, it shows us the accounts connected but the “Continue Button” looks blocked so we can’t continue.

I don´t know the reason why this is happening now. Any idea of it?

The page I need help with: [log in to see the link]