Hi:
I’m sorry for this support of your topic.
For the first issue,we have modified the BOM of Tick shield,i’m so sorry for this avoidable mistake,and we promise we would not make this thing happens.
For the second issue,it has nothing to do with the capacitance.Although the schematics between them are not the same,but it can work well.
For the third issue,we can’t make sure whether it is the problem of the 7 segment display.We need have a test separately.
But we apologize for this thing,and you can drop a line to customer service,and talk about with your barter.
Thanks for your comprehension.
Best Regards
Jacket