Happy to hear you got the cameras operational.
As for your wireless, we do not sell anything that will connect your DVR to your wifi. Our DVRs/NVRs do not support this feature as it seems yours does not as well. We only carry one small NVR that would connect to your Wi-Fi however it is made specifically for that.
My suggestion is to just hard wire it to the LAN. It is clearly working and it is more reliable as far as I'm concerned.