if you search the forum you’ll see that this problem with the demo (current and beta) not working right is a constant thing. It seem to be a matter of luck to some extent that someone with the access rights and capabilities to fix things is taking care of those.
Therefore I had offered before to become the maintainer of those test instances but did not get any feedback on that yet. It can be that, if those instances are multi tenant sites of the commercial erpnext.com hosting it’s even impossible to maintain those without being a full admin of erpnext.com instances which Frappe Pvt. can not share with anybody outside their company.