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Peakd Test site also had a similar issue, oh well that is the nature of testing.

If you use https://testnet.peakd.com keep in mind that you should also change the node configured in Hive Keychain to cast transaction on the testnet ;)

That's what did it then, I didn't change any keychain stuff, I did not know. I'll try again over the next couple of days or so.

also side note, keychain "testnet" rpc node doesn't work atm (which is what happened to me), a fix is on the way though

Okay, as more and more people try to test, at least along with the hardfork issues testnet issues are also found, so that is good for the future est.