same problem here – feed not updating, resetting data did not do the trick, reauthenticated/reconnected account, now the entire block is blank (see attached screenshot, block will display blank in live mode) with no way to reintegrate the instagram feed – tried deleting and reconnecting the account plus deleting and re-adding the block (both under classic editor and fluid engine) multiple times, to no avail.
acknowledged by squarespace's support team as a bug plus the usual our engineering team is looking into it and we can't provide a timeframe for a solution info i can recite by heart by now. i know they will – eventually, whenever that may be – but i agree with @BajanCode that this is incredibly frustrating when you've told clients that squarespace just works and they opted for this paid solution over a wordpress site and now a basic thing like the instagram block (which is a central part of their website – and now gone) does not. this is not the only current bug that i am waiting for to get fixed, but that's another story.
does anyone have an idea for a temporary fix to get the feed back on track – maybe @paul2009? thanks in advance.