This is extremely odd. In Dubai Police website , the stated timeline is actually 1 hour because the system automatically cross-reference your EmiratesID with many records at once, such as GDRFA records, Bio-metric records and CID. This process should be ran withinin this timeframe but sometimes it takes few more hours for someone to manually authorize the release of the certificate.That was fast. I applied mine on Jan. 13, 2019 and I still don't have it now. I have my Emirates ID.
So you definitely have an issue you are MUST contact them to figure out why it is taking that long.