Thanks for posting to the Apple Support Communities A0327,
We understand you're having trouble with a couple of your apps following an update.
To increase your chances of getting a specifically helpful response from the community, we recommend providing some additional information.
To start, can you describe what happens when you attempt to open the apps? Do you get an error, no response at all, or something else?
It looks like the Circuit support site lists the latest version of the app as compatible with macOS 10.15 or later, and Canva advises using Safari 12 or higher. What version of macOS do you have installed?
Canva - Technical Requirements
Design Space - System Requirements
You can also find general troubleshooting guidance that may offers a solution, here: If you can’t open an app on Mac
Take care!