I received an update (Quicken Classic version R64.30 build 27.1.64.30) that allegedly fixes the Fidelity issues, but did absolutely nothing for my Fidelity HSA account. The previous "new method of connecting" made a disaster of the account, adding multiple money-market transactions & short-cover transactions (?), changing previously reconciled transactions, etc. The net result was a unfathomable balance mismatch. Additionally, no new REAL transactions have been downloaded in several weeks, even though they show up on the Fidelity website as activity.
Again, the "update" appears to do nothing. Meanwhile, I deleted all the extraneous transactions and am about to disconnect the account from online access altogether unless this can be resolved quickly
Like another recent post, I've been using Quicken for decades and have never encountered such situation