If you subscribed to InvoiceASAP from the Clover App Market, you can cancel your InvoiceASAP subscription by simply uninstalling the InvoiceASAP app from (all of) your Clover device(s).
You can also cancel from your computer
STEP 1: Go to Clover and log in.
Input your login credentials.
STEP 2: Click on More Tools.
STEP 3: Click on Installed Apps.
STEP 4: Click on InvoiceASAP
STEP 5: Click on the 3 dots.
STEP 6: Click on Uninstall