New player with some questions

I played a nice session of 4 hours yesterday and reached lvl 7 while dying alot.
I logged on today and i noticed that after i installed bartender 2, my bar 1 changes to bar 2 when i press the shift key. And it completely dissapears if i press ctrl.
I also tried to chat in general chat, but /1 doesent work. And just brings up the ''Type /help for a list of commands''
If anyone are willing to help me i would be completely grateful.
I logged on today and i noticed that after i installed bartender 2, my bar 1 changes to bar 2 when i press the shift key. And it completely dissapears if i press ctrl.
I also tried to chat in general chat, but /1 doesent work. And just brings up the ''Type /help for a list of commands''
If anyone are willing to help me i would be completely grateful.