request to the REST API failed due to an error.

Hello, I have problems with the theme!
1 – request to the REST API failed due to an error.
Error: [] cURL error 28: Operation timed out after 10000 milliseconds with 0 bytes received

2-Loop request to your site failed. Features that depend on its performance may not work as they should.
Error: cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes received (http_request_failed)

I tried different VPS, Hosting, but the problem is solved if you de-edit Arcane and put any other. Wrote to the mail, info@skywarriorthemes.com, but there was no response after a week and a half of waiting. I will try to write here.