I have the same problem as Yomi above – when a new user registers (inc selecting member type via single member type field) they get the wp role Customer regardless of what role I set in the Users > Member Types section. This is after activation and login by the new user.
I have tried deleting the plugin and re-installing and deleting all users and all member types but still the same problem.
The wprole is updated correctly if member type is changed via the wp backend > Users.
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