[Admin Pages Redirecting to Storefront]

I've been on with them for an hour now, saying there is nothing wrong at their end. Just tried installing another cart software in a separate folder and when accessing it, got redirected back to original homepage again. I'm thinking its an htaccess problem

 

[Admin Pages Redirecting to Storefront]

This morning from out of nowhere, when trying to add products as well as several other admin tasks I keep getting redirected to the storefront url and the job that I was trying to do doesn't save. This can be adding a product or even trying to view the php info page, its happened when altering shipping rates in AIO Shipping extension too.

Nothing else has changed since I last logged in yesterday, I thought it might be the update to 6.1.14 but I did that this morning after having the problems and it still does the same thing??? there is nothing in the error log either. I'm totally puzzled.

Any ideas???