You are only able to have a certain number of un-approved images on e6AI at once. Once you reach your limit, then a moderator has to approve some of your posts before you will be allowed to upload any more.

The limit is raised by uploading posts, and having them approved.

The limit is lowered by having your posts deleted or replaced.

The upload limit does not apply for users with unrestricted uploads, as posts from these users do not need to be approved.

All users, regardless of their account rank, have an upper limit of 30 uploads per hour.

Calculation

Click here for a more detailed breakdown for your account.

Your limit is calculated using the number of approved posts, deleted/replaced posts, rejected replacements and currently un-approved (pending) posts, rounded to the nearest whole number.

10 + (Approved / 10) - ( (Deleted + Replaced + Rejected) / 4) - Pending = Remaining uploads