Fatal error cannot fix

Hi,
I see this was addressed and resolved in a separate post, but I am unable to resolve it on my site.

After an update, this site started getting fatal errors, but as this is a website I’m doing just for a fun project and not needing traffic right now, I decided to address it after the holidays.

The error is:

Fatal error: Cannot declare class MyCred_Gutenberg, because the name is already in use in /home/customer/www/miceandmagic.com/public_html/wp-content/plugins/mycred/includes/mycred-blocks/mycred-blocks.php on line 11
There has been a critical error on this website. Please check your site admin email inbox for instructions.

So, normally I’d address this and solve it by manually disabling plugins, and then reenabling them. But this time it will not be fixed. I’ve tried:
1. disabling all MyCred plugins
2. disabling ALL plugins
3. disabling all plugins from PHPmyAdmin
4. Switching to a default theme from PHPmyAdmin
5. renaming .htaccess

I’ve also tried restoring an earlier version of the website. Still and error. Nothing will work, and this is on cheap hosting where the solution is “get a developer.” I’d expect disabling the plugin in question to work, here. Any other ideas on what I might try?

Thanks

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