My site jumps out of "https" to "http" with a warning message when you proceed from address to shipping in checkout...

[undercoverfab]

I have another store on prestashop that doesn't have a problem with this. It has done if from the first day. Is there something I have configured incorrectly? Here is the error message I get from Firefox.


"Although this page is encrypted, the information you have entered is to be sent over an unencrypted connection and could easily be read by a third party.

Are you sure you want to continue sending this information?"




If anyone can help I would appreciate it.

Thanks,

Matthew