APP not compatible

[AMZY]

Hi!

I'm still navigating my way around shopify, and have been customising a website theme on Canva (for ease of use) and I came across the Canvify app, however when I am on the apps site, it states 'not compatible'.

1. What does this mean?

2. and how can i embed my canva theme onto my shopify site?

I am also, at the moment, on the Legacy Starter plan.

Any help is welcome, thank you

Amnah