ok, now is working. For some reason when you replace the dll file and the ex4 file, it really doesn't replace them. You have to do it several times and make sure that the modifications dates of the files are those that correspond.

It might be that it was during weekend and MT4 had some problem. In any case, fro Real account the replacement of the files worked correctly meanwhile yesterday Sunday was not working. But now today Monday, meanwhile the Real account is working, the demo account even with the replaced files accepted by MT4, keeps not working, Keeps saying Broker: can't open MT4 bridge. Can't connect.