When i added a 30 minutes to my daily listening, the coins are not updated , the same for reading
I believe this is by design, to prevent people from (so easily) cheating on the coin-related competitions etc.
EDIT: Indeed. See: How to earn Coins and what to do with them? - Knowledge Base / Getting Started - LingQ Language Forums
By design, or else you could meet your LingQ goals by…not using LingQ.
I like to keep track of the coins earned daily too, but ultimately it’s part of the gamification to keep people coming back and using the app/site. The problem is that it can make us feel like the language learning activities that we perform outside of LingQ aren’t as valid as the ones that earn us coins – when that’s obviously not true at all.
I’d be a LingQ billionaire if I had coins awarded for all of the time I’d spent in other countries and using other programs to study languages.
That is how it always worked. You won’t get coins for manually added listening/reading time.