Website has 500 error after deleting plugin

I deleted the plugin “Remove Powered by WordPress” on my website. As soon as I deleted it through Dashboard/Plugins, the site stopped working and shows 500 Error on both the website and the dashboard. I cannot access it at all.

I went to my hosting service (HoastGator) and reinstalled/activated the plugin using Softaculous WordPress Management. It has not resolved anything, unfortunately.

I would appreciate advice as to how to trouble shoot it. To be clear, I have access to my cPanel and file manager through my hosting service, but no access through the website dashboard.

And in a case of ridiculous neglect, I do not have a recent backup of it.

Thanks in advance

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