NOT solved. Don't upload it. I have a ticket opened about it for 3 weeks now with no answer. The problem with the module it it was coded with IonCube 5.6, so it won't support IonCube 10. If you can, I'd switch your PHP back to 5. I can't, I am stuck on PHP 7.2 99% of the modules I use have been coded to run on the latest software. WHMCS Module Shop has no clue that PHP 5 is PAST EOL and is no longer supported.
WHMCS Module Shop specialise in developing modules which enhance the ability for WHMCS to be used as a "website" and not just a billing/automation platform.
We have some highly successful modules which add features such as SEO, Page generation, Social interaction and much more.