Update: I tried the rollback plugin back to version 3.3.2 and the site is working fine again. So it’s something in the new version doing this.
I did instal Mailchimp for WP recently. I tried to disable it right now and leave this plugin on and it seems that it’s the cause of the problem. Is there any way to solve this issue? I’d like to use both plugins, which I now can only when I disable one of them for anything I want to do as admin.
Will do. Thank you for your help!
I registered the domain at Czech company, I already have one domain from them. I also have there the hosting space, but I guess it didn’t connect somehow? I have one 1GB space bought there, which should work for all websites.