Can't create groups or add contacts to them

What type of contacts server are you using (e.g. Gmail, iCloud)?

The Mailspring Contacts system only works with certain mail providers (such as Gmail) and formats (e.g. CardDAV). More details:

https://foundry376.zendesk.com/hc/en-us/articles/115001875711-Managing-your-address-book-contacts-within-Mailspring

A number of users are having problems with it:

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