I asked about this on the "legit " vechain telegram channel and I was immediately sent a message by 2 people saying they were from the vechain foundation. They proceeded to send me a link that asked for my mnemonic passphrase. I obviously got wind that it was a scam and didn't send.
Never send anything about the private key and mnemonic passphrase it's a scam attempt, be aware!
^VTHO generated by simply holding the VET on their wallet and OP mentioned that he is holding it in their official SYNC wallet then he should be having enough gas fees I guess.
Yes and also from Masternode.
I don't know did he have enough VTHO to be used for a transaction, but I believe he doesn't enough VTHO to make some trasaction. I thing @OP can buy VTHO and send your VTHO to the address and used them for fee transaction.