Please read this article:
https://infinityfree.net/support/cannot-use-or-have-problems-using-lets-encrypt-or-sslforfreecom/
If you want to reset the URL from HTTPS to HTTP from your database’s phpMyAdmin follow these steps:
- Go to your Control Panel, then click on “MySQL Databases”.
- Click on “Admin” next to the database you want to manage.
- Locate a table named
wp_options
(or whatever it will be, depending on your WordPress installation). - Edit the
siteurl
andhome
values to have the HTTP version of your domain (for example,https://yourdomain
would becomehttp://yourdomain
) and execute the query.