Check this
guide at the beginning of the section. I went through the process with a TP-link, thought not a VR series one about 6 months ago. I found out that copying and pasting the password was the issue and I typed it in manually and that fixed my problem (took a half hour to figure that out). My advise would be to start over with clean installation but make sure you type in your password instead of copy/paste and it should flow pretty smoothly.
As for taking it to Mina Al Hosn, my understanding is that if you on a unlimited plan, they won't give you admin rights, otherwise they will. That policy could change at any minute, but if you take it there, bring up your concerns and see what happens. Anyhow, good luck.