when I export, I get a totally different address. sometimes when I try to send trx to my guard address, it says its invalid.
there is something abnormal about this app
Which wallet app did you use to import your wallet and are you completely sure you chose the correct coin when exporting the private key? Better import the pk into a different wallet instead of Guarda.
Getting a different address means you have imported the wrong private key or did something wrong along the process.
I read some complaints on reddit about Guarda not showing the transaction fee which makes it impossible to finalize and broadcast the transaction. So, it seems like a common issue with this wallet.