New C645D outdoor camera put it together inside and now ready to mount it outside ... but the release tabs on the sides of the mount will not release. The tabs only press inward about 1-2 mm (concurrently) but the two parts will not slide apart.

Getting ready to return $1100 of Tapo equipement due to stupid problems like this.

Ideas? Willing to wait 24 hrs for a solution ... then everything gets returned.