Hi noela1,

There isn't really enough information to diagnose what happened. Note that Bitcoin Cash changed to a new CashAddr format to help people from accidentally sending BTC to BCH wallets and vice versa. A CashAddr format looks like this: bitcoincash:pqkh9ahfj069qv8l6eysyufazpe4fdjq3u4hna323j and the old format looks like this: 35qL43qYwLdKtnR7yMfGNDvzv6WyZ8yT2n. Note that the "bitcoincash:" part of the CashAddr format is optional, but officially supposed to be there, which is probably why your sending wallet displayed it that way.

We need more information to try to see what may have happened by checking a block explorer. You can post your full wallet address here or investigate yourself with a block explorer like this one: https://bitcoincash.blockexplorer.com/

There is no harm in posting public wallet addresses unless you're specifically trying to hide that from someone linking to your particular forum name. I mean nobody can steal funds just by knowing a public wallet address.