Absolutely not. My opinion on how a transaction went does not need the
seller's input, whether it be about shipping time, quality,
functionality, or any other aspect of the transaction. It is my opinion
and mine alone.
Evidently, one of your positive feedbacks was from more than one month
ago. The number of feedbacks in the 1 month column, is the number of
feedbacks in the last 30 days only.
I believe that electronics generally perform better in colder
temperatures, and that heat is generally detrimental to performance and
can cause damage to the device if too hot. I use a vent mounted holder,
but not with the heater running.