Hi @madziulek,
I am sorry to hear about that and it’s unfortunate to hear that have been facing the same error even after changing the server.
If you would like to share your site URL with us, we would be happy to examine the issue more deeply. If you prefer not to make your site URL public, you can contact us privately using this page l and reference this support forum thread. You can use our contact form to do this.
Looking forward to hearing back from you!
Thank you!