Hi SamClaus,
You have a hairline radial crack in your platter (it’s at about 7 o’clock in your picture), that will be what has caused the manufacturer glue to fail.
You can apply some more glue yourself, it really does need to be a smidgen though. You don’t want it to run down into the motor bearing. Use a cocktail stick or similar to apply a small amount to the tip of the motor shaft & a smear down the shaft, but only 2 or 3mm down. Then refit the platter as concentrically as possible in order to avoid getting the glue on the bottom face - you only want the glue up inside the hole.
Ideally the platter needs to be replaced.
Regards
Neil.
Edit: For reference, we use Loctite 380e.