login URL got messed up

I run a multilingual Web site at https://www.mosartek.ch/ with WPML for language management.

Some time back I installed Custom Login Page Customizer to make the login page look prettier.

Until a short time ago, the standard https://www.mosartek.ch/login URL would take me, as expected, to the login page.

Now suddenly it doesn’t anymore. It takes me to the German home page, and changes the URL in the address bar consequently.

I have not changed anything in the meantime.

The worst part is that apparently my site’s standard WordPress /login URL appears to have been tampered with. If I disable Custom Login Page Customizer and try entering the standard /login URL, it will lead me to a page that apparently was created by Login Page Customizer and I cannot find anywhere.

It seems that Custom Login Page Customizer has broken my WordPress installation and I cannot find a way to fix it. Any help would be appreciated.

thanks in advance
Stefano

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