Best backend/server support for wappler?

Hi all,
I have been trying to use A2 hosting for the past few months but so far have been unable to get things to workout correctly. I’m sure some of it is my lack of knowledge, and I would love to correct that, but I cant seem to find any solid detailed documentation for this service. I was wondering if there is a better service that can offer both a low cost shared server/database option for initial use, and a VPS for possible future development if needed? I’m trying to setup an ecommerce site. I havent been through all the wappler videos as of yet, but if there is one that details the database and server connection that would be perfect.
Thanks!