Your online shop will be prone to regularly go offline. Sub-standard hosting platforms can’t guarantee high uptime.
Your website will load very slowly. Poor hosting providers can’t guarantee fast loading times for your website. They just don’t have the right tools or resources for it.
Your brand’s reputation will get seriously hampered. Customers will complain that your website is down a lot, and even when it’s online, it takes ages to load.
You run the risk of getting hacked. Bad hosting services don’t offer any security features like SSL certificates, 24/7 monitoring, or automated backups.
You will not have anyone to turn to, in times of distress. Sub-par e-commerce web hosting providers only offer customer support 2-3 days a week if that.
Slow speed, high downtime, and poor security etc. will prevent you from ranking high on Google. Even if you write high-quality, informative content, and follow other SEO guidelines religiously.