High memory usage and crash problems

there’s nothing wrong with your hosting it’s just not big enough! the clue is in the word economy…

e-commerce sites use a lot of resources, lots of pictures, database calls, static and dynamic files, php calls to render content via plugins etc. you’re trying to run a large site (even if it’s still in development it’s large!) on small hosting. imagine trying to fit a pint of beer into a shot glass!

they may say that you have unlimited this and that but there are fair usage policies in place on shared servers and when you hit your limit and start to use other resources that are allocated to other sites on the same server cluster you can run into issues and even be penalised by your hosting company for breaching their terms of use.

if you’re serious about running a store with hundreds or thousands of users on it daily then you’re going to need a dedicated server so that all of the resources are yours. in the short term, upgrade your hosting package to the largest shared one you can afford and take it from there.

https://uk.godaddy.com/pro/dedicated-server this is the uk godaddy dedicated server information (not sure where you are!) but yes, it does come with cpanel. it does also cost more than shared hosting but it’s all yours and you’re not sharing resources with dozens or even hundreds of other sites

explore the options, talk to their tech support (rather than the pre-sales people, they’re genetically designed to steer you towards the most expensive solution!) and see what’s what. if it’s going to be a big old site with lots of traffic and transactions then you need to be serious about the hosting it’s built on. uptime and reliable connections are the backbone of reputations and converted sales!