Hi @otrip,
The system will only use your vote, if your voting power is above 90 (currently is´t 82) and if the system don´t use your vote you will not get anything into your account....and no upvotes.
You can change the default Voting power limit from 90, too what fits you with the command :
min. vp: xx%
ex.
min. vp: 80%
But the idea is that the system, should use your vote, when you don´t need it ( when you not online)... So change it wisely ;-)