Password Protect Issues

Page in question:

https://www.4mulaevents.ca/?p=30

Password is formula

When you enter the password, the page is just reloaded as if you did not input anything. I have tried different theme, fresh install, no plugins.

I KNOW where the problem originates, just not where to fix it:

I have my wordpress URL set to https://www.lushwebsites.com/4mulaevents and my SITE URL to https://www.4mulaevents.ca . When both URLs are the same, pw protect works fine. Since I need different URLs though, I must figure out how to make it work.

PLEASE HELP. I’ve been trying to solve this for a few days now.

Thanks

p.s: If someone knows where you can get paid WP support, let me know. I need to fix this and so far have not been able to get answers in the forums here.