He keeps thinking and does not send to metamask network EMC

Hello, until yesterday the metamask was very good. But yesterday I couldn’t send my EWT tokens, which were normally sent to my exchege.
I was able to do it from the mobile, from the PC it was impossible, it was pending.
Today I have tried to recover benefits to my metamask, it does not allow me to think about the mobile, and the pc leaves a contract but does not perform an operation.
Desistale everything and look at the solution, but I can’t find anything.
I hope I can get help and fix it
Thanks
Manel