It's not "cPanel" that has max user connection limit, it's your hosting provider that has set a low Max connection on MySQL to save resources.
Your hosting provider might have Max user connection of 25 (most cheap hosting provider has that) and if you are scaling your business, 25 max connection will take you no where.
Consider changing your hosting provider and get a better one. (Or Remove all 3rd party modules and your custom php/MySQL affecting code - if you have any)
The response you got from your hosting provider is just a generic message they send everyone.
Foodomaa is optimised for performance and has no issues on the database. You should not have any doubt on this. I can guarantee that (unless you have customised yourself or using any unofficial modules)