How to verify upload?

I upload info using TowerCollector. It looks like my data are not uploading correctly. I use my personal API Key in TowerCollector, and it does not show any error on upload. However, when I check 24 hours later for a cell I know I am collecting and uploading, the “latest update” on the tower is from July.

I logged into my OpenCellID account. Should Uploads being showing up in the Activity tab? If not, is there a way of verifying that my data are correctly uploading?