Hello cesar2807 and welcome to the forum.
I found your post here too.
https://www.midi.org/forum/6296-midi-out-3-5mm-to-midi-in-2-5mm-trs-3-5mm-to-2-5mmAs this is primarily a user to user forum, someone-else may chime in [#]. Meanwhile, the best thing to do is
check the FAQs, via here. If they do not resolve the issue, there is a link to the Technical Support form, for some one to one help. Response time is usually within 2 working days (US (East Coast) Business hours, generally), but in the current circumstances please allow some more time.
[#] But please remember that the same symptoms do not necessarily mean the same problem.
And, to help others who run into a similar problem, please let us know what you did to resolve the problem, but without directly quoting any correspondence from Support.