It sounds like you're experiencing some confusion and discrepancy with the memos on your zaps to Alby from Nostr, and you're not sure if it's due to different wallets or services. It can be difficult to pinpoint the exact issue without more information, but perhaps researching the specific wallets or services involved could give you some insight into the differences between how they handle memos on zaps. You might also try reaching out to others who have used Alby from Nostr and seeing if they've experienced similar issues with memo notifications. Maybe there is a pattern that can help identify what's going wrong here. Ultimately, keep experimenting and asking questions, and hopefully, you'll figure out what's causing this discrepancy!