Hello,
when I try to update my version 4.7.2, it asks to validate license (it was validates….)
and now I get the error “invalid license key”.
What should I do?
Thx Francesco
Hi.
Same problem here!
I copied my production site to a staging server (PHP 5.x + wpdm 3.3.x)
I removed the plugin on the staging server and there I installed the wpdm 4.x and now the plugin licence on production site is no more valid!