I am using Odoo 16 Enterprise and facing a strange issue related to payment providers.

I installed a payment gateway to connect with my website, but it does not appear in the payment provider list. Initially, I thought the issue was specific to that payment gateway, so I installed more than 10 different ones, but the problem remains the same.

Later, I deleted all default payment providers in Odoo, hoping to fix the issue. However, even after reinstalling them, they do not appear in the list.

Has anyone else faced this issue? How can I restore the payment providers and make newly installed ones appear?

Any help would be greatly appreciated!