Cant_exchange_token and http_request_failed errors

Hello,

I am trying to use Auth0 on wordpress, to help users log in with the same username and pass as on a different app that we have with Auth0. I have installed the wordpress plugin and I’m on wpa0-setup
I tried that a few times now, and I get the errors in the title at Step1. First, after selecting the account type was getting only cant_exchange_token error, which was similar to an error mentioned on another post here on the forum - the log was empty as well (https://auth0.com/forum/t/cant-run-auto-setup-in-wordpress-video-includes-video/4888/61).
Last time i Tried I got the same error, but also the log had the following line
WP_Auth0_Api_Client::get_token http_request_failed cURL error 28: Operation timed out after 5000 milliseconds with 0 bytes received

Can you, please, tell me what am I doing wrong?

Thank you

Regards,
Mario

topic moved here from https://auth0.com/forum/t/cant-exchange-token-and-http-request-failed-errors/5828

Also, the latest update (reply from my hosting provider):
The website is loading up ok using Lynx, the wget command also completes successfully - so the server is able to communicate with https://.auth0.com/testall without any problems as far as we can tell.

For troubleshooting purposes, have you tried to go through the manual setup (no internet access) instead of doing the automated setup?