I just got another 60 day unable to travel due to COVID-19 extension at CW (TR-60, counter J) which is probably the last one as the staff explained to me that now that the country is beginning to open up again, there shouldn't be any more extension of this kind.
This time I was asked to provide either a letter from my embassy detailing why I am unable to travel or a copy of the flight itinerary back home. I had neither so I was given a chance to submit it without having to redoing everything if it could be done by noon, which I fortunately was able to produce the latter in time.
Other things that were required/checked were TM30 and 90 day report receipt.