I seem to have a similar issue:
https://community.make.com/t/issue-between-make-and-prestashop-8-1-0/29287
Were you able to resolve this and connect?
I seem to have a similar issue:
https://community.make.com/t/issue-between-make-and-prestashop-8-1-0/29287
Were you able to resolve this and connect?