@affa, I'd like to narrow down the problem.
Does it work if you use the Parameters button on the website?
4701b125-7b34-47c8-b4c8-6ab82b380741-image.png
4095952f-1b6d-432b-870b-21e30394ef63-image.png
We should make sure this works before moving on to Integromat.