how can I contact the dev team ? Help needed
Yep, here or IRC. Do note, however, that this week is a holiday week in the US (where most of the team reside). Support requests may be delayed a bit.
Also, please try to be as detailed and descriptive of your issue as possible. include OS, specific client version, and (if applicable) any error messages.
would you please inform me who should I contact for technical support on mint wallet?