Having trouble registering your purchase code in WordPress? I've been there! Usually, it's a caching issue or the theme/plugin servers are temporarily down. Clearing my browser cache and trying again later always seems to do the trick for me. Anyone else had a similar experience and found a different solution? I'm wondering if it's something more sinister, maybe involving animatronics...just kidding (mostly), though Five Nights at Freddy's has made me paranoid about everything these days.

It doesn’t matter which OS you use. You need to contact your hosting and ask to disable firewall. Also you can check if you have security plugins. They can also block remote connections 

Hi, im with windows 11 now, previosly was with windows 10. When installing windows 11 i read will be security issues with not compatible procesor and motherboard, could this be the reason i cant register? 

it is about REHUB theme.

If there is a way to overcome this problem without going back to Windows 10, I would be grateful.

And i also on some free hosting plan with https://cp1.zettahost.bg/