Hello Evgene,
Yes, I will give it a try. In the future, why doesn't appery.io pickup a Chromebook (they're only $200 or so) to do some quick tests on. I think there is big value in supporting this as they are becoming popular in schools (and elsewhere). Obviously the concern people will have is that if you release a new version, their development stops if you aren't testing against Chromebook.
This still hasn't been fixed. It was working. And the database tool works fine.
Despite having priority support...I can't actually get to that as I can't get to the app building 
Hello,
This is something we are working on, please tell us what exactly does not work? Do you get any errors?
As officially we support these browsers https://devcenter.appery.io/documenta..., testing builder on Chromebook will take additional time.
I get the same error as originally posted above. Exactly the same error.
On Chrome Browser that is in your supported list.
Please advise if you do not support Chrome on ChromeOS.
Previously testing of Chrome on ChromeOS was not covered, working on it now.
Great, thanks. Do you have any idea when this might be done ?
We can not say any exact time frames for now.
Please stay tuned.