Using VPN and having an internet issue is also a factor knowing Ammar said that it needs to complete the ReCaptcha but nothing shows from recaptcha's end. Using VPN will have an effect depends on the server someone's using, it can take much longer to load due to server issues, and the same reason when there's an internet issue from the user's ISP.
I also suggest to use different browser if both VPN and internet is not an issue.