Should never have been a surprise. When they announced the reopening, they quoted there was capacity for 330 tests/day. After day 4, there will always be 2 full groups (arrivals and day 4 people) who need tested plus any normal testing required in the territory and any exiting people. Basically means you should never allow more than 100 or 150/day to enter the territory depending on how many non-traveler tests you need to accomodate.