Your tokens are frozen now so you can't transfer or trade them. So in this case your options are very limited:

Check the withdrawal deadlines again, as they usually provide the deadline to withdraw.

Check if you can manually withdraw the coins, as some exchanges offer some time window to withdraw the delisted coins and transfer them to a compatible wallet.

If the above options will not work, then consider it as a capital loss and report this on Form 8949 and Schedule D (Form 1040).

And about the reporting, definitely you need to report such events, and for the next time, try to avoid dependence on exchange decisions.