Collaborators

Hi everyone,
i’m registering webhooks and i can check they are registered(with httpie). However, i’m not receiving anything(transactions created notifications serverside) for “collaborators accounts”. For my own account, it works perfect so i doubt it’s an issue with ssl as mentioned in the webhook topic feed. I’ve asked monzo openbanking guys who told me under 25 white listed collaborators it should work. I’m getting aisp in the next months or so but as for doing some testing it would be great to have webhooks from my collaborators accounts. If there is anyone to help on that i’ll appreciate any help.