Error 404 when updating license

And that's with the default "Post name" permalinks set?

Are there any redirects happening on the site? Via plugin, .htaccess or server?

Yes, I have the permalinks with the "Post name", on the server I don't have any redirects and I have checked the .htaccess file and there are no redirects.

If I try to access the wp-json route, it returns a result with the url https://padelsportgranada.es/wp-json/generatepress-pro/v1:
Content:
{"namespace":"generatepress-pro\/v1","routes":{"\/generatepress-pro\/v1":{"namespace":"generatepress-pro\/v1","methods":[" GET"],"endpoints":[{"methods":["GET"],"args":{"namespace":{"default":"generatepress-pro\/v1","required":false}, "context":{"default":"view","required":false}}}],"_links":{"self":[{"href":"https:\/\/padelsportgranada.es\/ wp-json\/generatepress-pro\/v1"}]}},"\/generatepress-pro\/v1\/modules":{"namespace":"generatepress-pro\/v1","methods":[ "POST","PUT","PATCH"],"endpoints":[{"methods":["POST","PUT","PATCH"],"args":[]}],"_links": {"self":[{"href":"https:\/\/padelsportgranada.es\/wp-json\/generatepress-pro\/v1\/modules"}]}},"\/generatepress-pro\ /v1\/license":{"namespace":"generatepress-pro\/v1","methods":["POST","PUT","PATCH"],"endpoints":[{"methods":[ "POST","PUT","PATCH"],"args":[]}],"_links":{"self":[{"href":"https:\/\/padelsportgranada.es\/wp -json\/generatepress-pro\/v1\/license"}]}},"\/generatepress-pro\/v1\/export":{"namespace":"generatepress-pro\/v1","methods" :["POST ","PUT","PATCH"],"endpoints":[{"methods":["POST","PUT","PATCH"],"args":[]}],"_links":{" self":[{"href":"https:\/\/padelsportgranada.es\/wp-json\/generatepress-pro\/v1\/export"}]}},"\/generatepress-pro\/v1 \/import":{"namespace":"generatepress-pro\/v1","methods":["POST","PUT","PATCH"],"endpoints":[{"methods":["POST ","PUT","PATCH"],"args":[]}],"_links":{"self":[{"href":"https:\/\/padelsportgranada.es\/wp-json \/generatepress-pro\/v1\/import"}]}},"\/generatepress-pro\/v1\/reset":{"namespace":"generatepress-pro\/v1","methods":[ "POST","PUT","PATCH"],"endpoints":[{"methods":["POST","PUT","PATCH"],"args":[]}],"_links": {"self":[{"href":"https:\/\/padelsportgranada.es\/wp-json\/generatepress-pro\/v1\/reset"}]}}},"_links":{" up":[{"href":"https:\/\/padelsportgranada.es\/wp-json\/"}]}}

But if I put the route to which it accesses, it already gives a 404 error. https://padelsportgranada.es/wp-json/generatepress-pro/v1/license?_locale=user

I already managed to fix it I think it was a server problem, thank you very much for your help Tom.

Glad you got it sorted! Do you know what the server problem was?