Quicken promo link from TT (2020 H&B electronic d/l from Amazon) IS STILL NOT WORKING.
The same message as for others here - "Oops, we had a hiccup! Can't connect to Quicken"
Called TurboTax support, as soon as they (Lauren) heard the issue, I was transferred to Quicken support.
Quicken asked me to create an account, then to upload proof of purchase, screenshots of the promo and the error.
Then they (Carlos) added 1 yr free Quicken subscription to the account (Win or Mac).
