Vauxhall Astra Van 56 Plate?

Having same problem as others on here, the van will lock with the key but no response from the fob at all, boot will not open without fob so no access to boot. When locking the van with the key all doors lock except the passenger door. Tried doing the turn once on ignition and lock key method but has not worked. Checked all fuses, they are fine. Any suggestions please?