To upload the Canva website to Squarespace, you can follow these.
#1. First, edit your Canva website

#2. Click Share on the top right of the screen

#3. Click More

#4. Click Embed

#5. Click Embed

#6. Copy embed code. In my example, we will use HTML embed code

#7. Paste the embed code to Code Block or Page Header Code Injection

#8. Save, Preview to see the result.

#9. Note
If you use Smart Embed Link

You will need to add it via Embed Block

