Help with Kangertech Cupti Please !

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First of all dam kind of a chain vapor i guess habits die hard lol...
I have all in one Cupti, one 4 mo old, 2nd one 3mo . newest 1 day and ordered my 4th this morning...i really like them, i am partially blind its very easy for me to use (AMD)
I will refere to them as 1,2, 3
Loved no.1 and worked great and after a couple of mo. i thought i buy me a Backup so i been vaping No.2 to give 1 a rest. Well No 2's display quit so i could not see where i am at, i cleaned it with a twisted paper...

Help with Kangertech Cupti Please !

Help with Kangertech Cupti Please !