I have Photos still in review after 18 days and one for 30 days. However, when I uploaded 86 pictures 50 of them were accepted in 3 days, but for the rest 36 did not. Then I upload other pictures 50 , they were reviewed in 3 days, but the fist ones never for 18 days . Feels like they will be never reviewed.
This forum is composed of volunteer contributors, just like you, with no formal ties to Adobe. All I can say is that your experience is very different from mine. I have on rare occasions waited for maybe 5 days for a decision; but on the whole, most decisions are arrived at in 24 to 36 hours (if you submit on the weekend it usually takes a bit longer because I don't believe the moderators work on weekends).
I think you need to contact Adobe to find out what happened to your missing decisions.
Look if they are not waiting for a model realease.
Contact contributor support, if you can't figure out what may be the reason. https://helpx.adobe.com/stock/contributor/help/Need-Help-Contact-Us.html
Keep us updated. This may help others.
Are you sure there wasn't an upload problem?