Account On Hold

Hi All, Our account has been on hold for almost 6 weeks and i am struggling to gain a reason why, I have been asked to provide proof of delivery on all sold items by uploading tracking. We have sold many hundreds of items and as far as i was aware all items are tracked anyway. So i am at a loss, has anybody had the same issue and if so how did you rectify the issue? Any feedback would be gratefully excepted