Every time I send XLM to my Nexo wallet (with the memo) it never shows up.

This is my third time sending some excess stellar from a previous wallet and it just never shows up. Maybe this has only been my experience but luckily it’s only been like $65 worth of stellar just vaporized into thin air or ends up in someone else’s wallet. Idk who’s stealing it but it’s only happened with stellar. Doesn’t seem to be a secure crypto token