Error 500 when trying to deactivate Asset cleanup

Hello,
I get an error 500 when deactivating Asset cleanup. Since I have installed it I keep having issues with this plug-in. Everyone seems to be pleased with it but me. It killed my formatting even though i tried to debug first. So i wanted to deactivate it but I cannot.

My error logs :

[Sun Sep 27 17:16:51 2020] [error] [client 86.69.48.70] [host www.dahuwakefamily.com] AH10141: FastCGI: comm with server "/homez.55/dahuwakecn/www/wp-admin/plugins.php" aborted: idle timeout (160 sec), referer: https://www.dahuwakefamily.com/wp-admin/plugins.php?plugin_status=all&paged=1&s
[Sun Sep 27 17:16:51 2020] [error] [client 86.69.48.70] [host www.dahuwakefamily.com] AH10149: FastCGI: incomplete headers (0 bytes) received from server "/homez.55/dahuwakecn/www/wp-admin/plugins.php", referer: https://www.dahuwakefamily.com/wp-admin/plugins.php?plugin_status=all&paged=1&s

Few days ago i could swap between multiples theme to try to tackle the formatting issue an now I can’t. I get an error 500 too when trying to change themes. Elementor doesn’t start anymore.
I’m not an expert on this and would love to have some help on this issue !

Thank you all for your support.