Clientarea does not display (weird redirect loop)

[adz1111]

Hi

I have an an issue that when a client on my site (https:/www.yourscope.co.uk) clicks the "Client portal" button they are sent to "https:/www.yourscope.co.uk/whmcs/" (which matches the WHMCS System URL). That's all fine. However, instead of opening up the clientarea login page it stays blank and redirects to:

https://www.yourscope.co.uk/whmcs/clientarea.php (which again I think is fine if that's where it stayed)

It then immediately redirects to this weird double -slash URL for a second or so: https://www.yourscope.co.uk/whmcs//clientarea/

And then that redirects to this weird double -slash URL: https://www.yourscope.co.uk/whmcs//index/ (where it stays, but does seem to be looping on that one page  - a 404 not surprisingly):

The site has been SSL from outset and worked fine until a few weeks ago, and the option "Default to Client Area" is enabled. I have read the documentation that discusses redirect loops being possibly .htaccess issues, and resetting Friendly URLs to "full friendly rewrite". I do use cloudflare and that has always had SSL set to Full (strict) - and this issue still occurs if I put Cloudflare into Dev mode. Following, all those suggestions has made no difference.

One thing I did notice is that if I am actively logged in WHMCS as the admin, if then go my site (in a different tab) and then click "Client Portal", it works as expected - I see the login screen and the URL is https://www.yourscope.co.uk/whmcs/clientarea.php - as soon as log out of my admin account - refreshing the client logging page brings this weird redirect loop thing again.

So I'm now kind of stuck determining where the issue is coming from? Any ideas from anyone please?

 

Many thanks

Adz