I can help you with how to cancel your payroll subscription. First, I'd like to know the specific details of what you have encountered when canceling it. This way, I can give the best resolution that fits your concern.
For now, you can perform the browser troubleshooting method to eliminate any possible unwanted data issues. You can begin by using an incognito browser to avoid saving the data. If you're able to cancel it from there, you can go back to the regular browser and clear the cache. If not, use another supported browser.
Here are the keyboard shortcuts to access a private window:
Microsoft Edge & Mozilla Firefox: Ctrl + Shift + P