The optional module, imagick, is not installed, or has been disabled

This seems like three completely different and unrelated issues to me.

Free hosting doesn’t have the PHP extension imagick installed, we only offer the GD extension for basic image manipulation. WordPress will work fine with GD as well, which is why imagick is an optional module.

That seems odd to me, because typically you’d see that WordPress either can or cannot establish a database connection, and this is not linked to a specific plugin.