How to fix Scrape key check failed on WordPress using LAMP droplet?

I create a LAMP server and the I installed WordPress. Everything was working ok, so I created a snapshot of the current state.

After I migrated the site to the new server, and then I receive I critical error from the website from the “PHP Code Widget” plugin that I had on the original server. So, I removed the plugin, and then the site worked.

Then I received the error “Scrape key check failed. Please try again” when trying to save a PHP file with the WordPress Theme editor.

I know it’s not ideal, but it should work nonetheless because then it means that there’s a problem.

So, I disabled all the plugins, and I still get the same error.

I changed the theme and I ended up with the same error.

I have a cache plugin w3 total cache, so I disabled it too and deleted the cache, and I continued with the same error.

So, then I decided to delete the VPS and create a new VPS, so tried to create another server with the snapshot I created, and now without doing anything I receive the error “Scrape key check failed. Please try again” when trying to save a PHP file with the WordPress Theme editor. So, I don’t get it, if it worked before, why I’m getting the error now when I haven’t even transferred anything from the old server yet.

So, I created another VPS, but this time, I created another VPS using a clean LAMP image provided by DigitalOcean. Then I installed WordPress, and this is supposed to work, right? Wrong, I haven’t done anything and every VPS I create from this point forward, I will receive the error “Scrape key check failed. Please try again” when trying to save a PHP file with the WordPress Theme editor.

Also, I’ve been using Chrome and Firefox in incognito mode for this process. I switched computers. and I have even tried a different internet connection with a different computer to end with the same error. The thing is now, I can’t even create a brand new VPS without running into the issue. Any ideas on how to fix this problem? Thanks,