The Pushsaga.com domain name was only registered on 22 June last year, so they'd not been around long when you placed your order. (Possibly worrying).
The domain name registrant's details were kept secret, using the 'Contact Privacy' service. Legitimate companies don't need to use that service. (Worrying).
There are no contact details for the company apart from the email address. There's a reference to 'Sofia, Bulgaria' but no postal address. (Worrying).
The service is hosted by Shopify, which is a perfectly legitimate ecommerce website but, which just like eBay and Amazon Marketplace, means that you're possibly dealing with a poorly run company or perhaps a one-man business. Further, Shopify doesn't seem to offer the same sort of buyer protection that eBay and Amazon Marketplace do. (Potentially worrying).
There seem to be absolutely no reviews for the company on the main independent websites (such as TrustPilot), suggesting that it's had very few customers. However it's showing as 'Suspicious' on ScamAdviser, based upon a single comment from someone who seems to have lost their money there:
https://www.scamadviser.com/check-website/pushsaga.com
(Worrying)