@Emiel1
It could be a temporary glitch or it could be yet another bit of programming genius Emiel!
You notice it says ..."You have no available nights in 2020"! That surely would be stating the obvious. And following on from that if you have no available nights you would also have no unbooked nights available for 2020!
Sheer bloody genius, they just keep on coming up with these things. Forget that hosts might actually wish to consult their past performance from time to time.
The other thing you will notice Emiel is, the figures for 2021 are all complete gobbledygook! It says for the year you have 68 booked nights and 430 un-booked nights for an occupancy rate of 14%!!!!
How exactly does that work when there is 365 nights in the year. With your two listings should those figures add up to 730 nights, or do you have 232 nights for the year blocked?
Cheers.........Rob