I have exactly the same issue as ‘merrill_kingston’ above except that I am attempting to run the client on a linux machine.
The install was via ‘snap’ so I had very little to do, I start up the client with a simple ‘jami’ on the CLI but on ‘Create a Jami account’, having entered endless usernames ranging from 3 letters to gobblygook, uppercase, lowercase, pure alpha, only numerical or a mix and I doubt that whatever I have entered is already registered even though I can find no info ready to hand just how to check so I am giving up and will probably simply delete it as this is just to much aggravation!
That’s it, just wanted to let someone know that, as far as I am concerned, this client is going no-where until such issues are resolved and one does not require a degree in IT to create a simple registration.
Update: I have just come across an entry by ‘sblin’ that states that there are issues when installing with ‘snap’: Register username - #4 by amwink so maybe I will be patient and wait for the next update. It then needs to be made clear re the exact criteria because I can find no reference to ‘never use a capital letter’ as stated by ‘jamesburns’ above.
ps I am still running Ubuntu 16.04 (yes I am trying to update) but your repositories available on Download Jami for GNU/Linux only support 18.04 and on, so will the client, if I can obtain an account, work on my Ubuntu 16.04 platform?
Thank you in advance