I added my Coinbase wallet using "Continue with Coinbase" but the sync always fails
after some time
with:
Access denied: Coinbase connection issue. Please click on Sync and then Reconnect
And no transactions get imported. I have confirmed that the connection is established on Coinbase website and don't use any VPN or ad/cookie blockers.
I also have a large account with hundred of thousands of transactions
Workaround
I need to import my data using CSVs. As the file may be over 10 MB in size, I will need to split it before importing to Koinly