Exemptify

Merchant had Exemptify installed for months, then angrily contacted us to complain it doesn't work, but provided no details of what exactly is not working or how we can help.
After asking for details of what exactly is not working, we received this response:
"I hired a devoloper. Who said it was configured but the thing does not work. "
A further attempt to try to finally get some answers was left unanswered, instead the merchant decided to leave this review a few weeks later - still without any useful information at all.