[Help] Can't install Acelle Email Marketer

I cant install Acelle email marketer.
Please Help me.
https://codecanyon.net/item/acelle-email-marketing-web-application/17796082

<< Place in the right forum if posted in wrong section>>

The best way is to install it in an add on domain or

Hi! If you're unable to install Acelle Email Marketer, perhaps it's because server requirements are not fulfilled—such as PHP extensions missing, file permissions incorrect, or database setup problems. Ensure that your server satisfies all the requirements described in the installation guide.

That being said, I completely understand how infuriating this can be. Sometimes, when I get stuck on this kind of thing, I give myself a flying break with something relaxed like https://cutedressup.com/game/1v1-lol/—just so I can head-clear before digging back into the debugging. ????

Tell me what the actual error message is and I can assist more specifically!