Review problem

Read the message on your submissions: waiting time is up to 8 weeks. 20 assets in 14 days is quite fast.

If there's no movement after 3 months, delete, rename & resubmit.

Did you upload assets individually or with a batch uploader?

The "standard" wait time for images to be reviewed is 8 weeks. I put the word standard in quotes, since assets can be reviewed earlier, later, or...seemingly...not at all. 15 days is not that long in any case, and deleting and resubmitting them will not guarantee that they be reviewed sooner.