Hi, thanks so much for your reply.
Yes to all of the above.
I’m using Tribe Commerce as shipped with the plugin – no other payment gateways.
IPN is set up as per the Primer and instructions.
Same issue occurs even when switching to Twenty Nineteen theme.
I’ve also tried uninstalling/reinstalling the plugin.
It *feels* like it’s not communicating with PayPal the way it should do, or that there’s some sort of broken link in the forwarding command. Is it possible to uninstall and completely strip out all the saved data for the plugin, or restarting the initial install wizard?
Best.
Tim