I have been mining Ethereum (ETH) using SMOS and Dwarfpool for the last few months. I was also using MetaMask to transfer my mined ETH coins to Coinbase. It was working fine until MetaMask pushed an update this week, and now all my account balances and history in their interface have been completely wiped out. I'm familiar with their process for regenerating an account with a seed phrase, as I've had to do that a couple times to access my accounts on MetaMask through my various computers.
My question isn't about MetaMask, so much as it is about how can I can get my mined ETH coins over to Coinbase. I've been working on this all evening, and I'm really stuck. My confidence in MetaMask is somewhat diminished, so if there's another reliable way to do this, I'm all ears.