Of course you can't the demo site is in english! I have enough of these behaviour every time there are BIG bugs in your updates! It's not the community's work to tell you whats wrong with your product!
Is this your strategy to push users in a full support subscription?
I'm using your product now for 3 Years and have payed a lot for it. I am not interested in pay you every update to get extended support to fix my site!
Also the Changelogs are not clear: you didn't bugfix anything in 4.7.8 you redesigned the Activity Post Window that isn't stated in the changelog!
These behaviour combined with bugs are a bunch of things that I can't and won't tolerate anly longer. I spend hours to get through your bugs every update because you didn't see them in your demo site or I must post them here day for day and waiting for reply to get a bugfix for ONE bug.
In the last update we have made to 4.7.8 only running for 5 Days our community has found 3 new Bugs.
We have also handicapped users relying on our page: they have more problems than ever with your new update, cant even upload pictures through these new activity stream because some of them have uppercase file endings like JPG and you can't upload! (hint for the next bug) and YES this bug you can replicate on your demo page!!! --> Selected file type is not permitted.
To be clear the complete product is a nice thing but with every buggy update its going to be worse. Why couldn't you push bugfixes AND beta updates with new things separately?
I'm also using software like Joomla, Kunena and some other plugins all these have such things, had never problem with updates. This is mostly free software where i doesn't pay much as this for getting a bug free and reliable product!