1 hour ago, TomR said:Hi guys,
see this post here (in German only...): https://wordpress.org/support/topic/iframe-ladt-nicht-zugriff-nicht-erlaubt/
It states that PayPal redirect won't work if you are sharing your SSL certificate for multiple sites. This is actually what I do, I'm using a Let's Encrypt certificate for several sites. May be Paypal has enforced checks recently? Not sure if this is the cause of the problem, will investigate further and keep you posted.
However: S-Corp and jibisaki - it would be interesting to know how you are hosting your Prestashop?
Thats not the reason.
I´am the Hoster and Provider (https://s-corp.de) where the Shops (over 400 Prestashop-Customers worldwide) are hosted and all of them have a problem with THIS module...other Paypal solution-modules work without problem.