@zikzik, very clean presentation in the first post.

I do not understand Basketball and also do not understand handicap betting. I tried to study handicap and I think I understood how it works and then again forgot lol. So please consider these two things if I present them wrong or write something which will read poor :-P
 
Just to be clear I have not looked into the case very closely yet but after reading the first few posts what I get are:

1. BetBTC changed their terms (for pre-match bets) from 20 minutes threshold to 30 minutes and did not notify their users.
2. They do not void bet less than 0.01 BTC

BetBTC should inform their users to accept when there is a change in their terms.
I do not see any bet that were voided which is 0.01 BTC or lesser.

Sorry I read only to this post (first response of BetBTC).

By the way, can anyone clarify why the bet was voided in the first place? Sorry about the amateur entry. I am still progressing to understand the case.