As I have said before, I have had absolutely no problem with my Blink EVSE, but I have not been using any timers.
Blink, for the moment, for those who use a timer, recommends using the timer in the Blink itself. However, that does you no good if you want to charge to 80 percent...
A few days ago I decided to try an experiment: I don't want or need a timer but I do want to try charging to 80 percent. So, I set a timer in the car to both start and end at 12:00AM and to charge to 80 percent. This seems to work beautifully as it will start charging immediately whenever I plug it in and always stops at 80 percent. And the Blink seems to be perfectly happy with this.
This may also work well for others with various EVSEs who only want the ability to charge to 80 percent but not mess with timers per se. YMMV of course!
Leaf SL 2011 to 2016, Volt Premier 2016 to 2019, and now:
2019 Tesla Model 3; LR, RWD, FSD, 19" Sport Wheels, silver/black; built 3/17/19, delivered 3/29/19.