I'm using Quicken Classic for Windows. I have one bill that comes up every two months, so I set up the reminder with "How Often" set to "Every 2 months". After paying that bill, it comes up to remind me the next month instead of two months later. This has been the case for many years. It's a little annoying and surprising, but I haven't figured out how what I'm doing is affecting this. It's either my problem somehow, or else "every 2 months" is used so infrequently that no one else has noticed or been annoyed enough to ask for it to be fixed.