Re: HELP: Sent BTC: 78 confirmations, Unpaid and BTC sent to different addresses
Yes I did one (1) BTC transaction from my electrum Wallet to my own Coinbase exchange/Vault address. My receiving address on Coinbase is: 3BVy8iSzyFGYSzqngk1tdhYiLCMuucRFZB
This address does not appear in either of those transactions, so you have NOT sent any funds to it. 
In electrum I made sure I had the correct address as recipient and under Send Tab - it s hows that transaction (1) with date, Transfer,. amount and status In there I can see that the BTC address of the recipient is the correct address I put in (mine), status is showing "unpaid".
"Unpaid" tells me that what you've done is setup a transaction but then clicked "Save" instead of "Pay...". Effectively, you entered an Address, the amount and then didn't actually sign or broadcast the transaction.
If you right click that "Invoice" item and then select "Details" it will probably show something like this:
except with your 3BVy8iSzyFGYSzqngk1tdhYiLCMuucRFZB address showing.
In the History transaction tab I have suddenly 2 entries (1 for 0.000178 and one for 0.231932) - equaling the total amount I was sending 0.23211.
I did not cancel anything, no bump fees. I hit transfer, it created the invoice piece that is showing unpaid,. but the money is gone. And do I know who or what the 2 addressees where that the tokens were sent to: absolutely not. I only out in my address.
Unknown addresses that I have no clue where they came from but are showing in the transaction details and highlighted in yellow as "Wallet change":
bc1qj2ay5m3l45klwappmqu9zw7ddlqlydr5mqeppw
bc1qfk6ky2r2ww7tkn4ymt59t4lq85rerthfemz3xr.
I have no explanation for where these other addresses/transactions came from... there is certainly something weird happening. Either your seed/wallet has been compromised and a 3rd party has restored your wallet and moved the funds, or the copy of Electrum you are using is "bad"™.I did not cancel anything, no bump fees. I hit transfer, it created the invoice piece that is showing unpaid,. but the money is gone. And do I know who or what the 2 addressees where that the tokens were sent to: absolutely not. I only out in my address.
Unknown addresses that I have no clue where they came from but are showing in the transaction details and highlighted in yellow as "Wallet change":
bc1qj2ay5m3l45klwappmqu9zw7ddlqlydr5mqeppw
bc1qfk6ky2r2ww7tkn4ymt59t4lq85rerthfemz3xr.
Given you stated you checked digital signatures etc, then it would appear your seed/wallet has been compromised in some other way.