For #6817 : First i will check the issue of customer order activation And pin. And then i will continue on current development.
for customer order activation i removed customer from telinta which one is related to testing account(email@example.com) and tried to activate number on telinta and it works fine.
For #6818 :
Thanks for the suggestion.
I will that Adjustments in future development.
Answer of Question :
I don’t know much about this but Number will come back to listing after some time(around 20min to 30min).