EC4 with SP 404

Hi everyone

I just purchased an EC4 to better control my SP 404 mk2
It works well but there is one function that I couldn’t manage to make work, which is the new looper mode of the SP 404. I checked the midi chart, put the right Channel (ch 1), the right CC, I tried many (87-88-89), lower 0 upper 127, Type CCab but nothing happens.
Is there anything I am still doing wrong ?
I also have the last version (version 2) of the EC4 and last version of the SP 404 mk2.
I also tried the learn mode but pushing the start button of the loop just changed the parameters to key mode, type: Note and values to 127 (lower) and 127 (upper). Also didnt work. I turned back the lower to 0, didnt work.
if you have any clue…

Since I change the SP from midi type A to type B, it started to work but in a really weird way. And now it works with both types but badly. I’d be grateful if you have any advice. Roland and Faderfox don’t seem to be looking for solutions when it goes beyond their brand. And the manual is tough to understand as a newbie in midi programmation.