Can’t add or modify social media links block

I cant add or change a social media block in MailPoet 2. I changed the google.png for a mastodon-image, and now I want to add the a proper mastodon link, but the social media block doesnt add at all. I tried to change this at dataabse, inwp_wysija_email, but when I then send a mail, it retained the old link, so the url is somehow retrieved elsewhere…. I think de MP guys stored in …

Ah fixed it, the urls – and everythng else for that matter – are base64 encoded in the wj_data field, a bit of a hassle to decode, alter and encode it, but it works.