Thanks for joining this thread, jacifield.

I want to make sure you're able to view this comparison report in your QuickBooks Online account.

Upon completing the steps mentioned above I was able to create a 5-year comparison Profit and Loss Report. The only difference I noticed was my option appeared as "Years", not "Calendar Years" but yielded the same result. I recommend double checking the custom date fields before running the report. Here's how it looked in my US QBO test account:

If you're still unable to select Years as a display option you may need to clear the browser cache. Doing so will remove anything that could be preventing the page from loading properly. The following article provides steps to get this done depending on which browser you're using: Clear cache and cookies to fix issues when using QuickBooks Online

Please give this a try and let me know how things look afterward. I'll be here to lend a hand.