do you mean trying a beta version?

I put 1 or 2  usd of fees and all transactions fail, that is the problem.

The problem is I can't do any new transaction.

It is like someone stole my funds and is using them to make whatever investment he wants, exactly the same.

edit:

I found something interesting:

https://kb.myetherwallet.com/transactions/transactions-not-showing-or-pending.html

it may be useful to others