We also facing same issue, we have sent email to Mr adeel abbasi (pral support) and he advised to wait for some days as they are still working to resolve the issue.
But I recently found that companies in karachi are able to reflect the invoices. So this issue is most likely in punjab only.
Regards
Mohammad Rizwan
00 92 301 111 2224
Asian Chemicals (PVT) LTD.
22 Km G.T Road Kala Shah Kaku,
But as I am from Karachi I am also facing this issue from last friday.So can you ask these companies again on what date they have submitted there last invoice in sandbox and it refelcted in sandbox.