Checkboxes & tags not syncing properly

Hi,

I’m trying to create a newsletter with different checkboxes, that people can select based on what they are interested in.

I have setup the mailerlite feed, the email goes to email, and Tag is connected to the Topics – the name of my checkbox field. and instead of choosing a specific checkbox name, I chose SELECTED.

So technically, what that should do, should pass over to mailerlite the checkboxes that people have selected. it sort of works, but it doesn’t.

basically, only 1 single checkbox/tag gets synced, instead of all of them. See video: https://share.getcloudapp.com/Z4uDobNn