Installing Mitel 5624 v2 SIP portable telephones on a Mitel Office 250 system -- 3

This project requires a technician that is very familiar with a Mitel Office 250 system and has experience installing wireless SIP phones on a commercial WiFi network. If you are not familiar with the Mitel systems, please DO NOT BID. We purchased a brand new Mitel Office 250 system and already had previously attained 2x Mitel 5624 v2 phones. Mitel has confirmed that everything was compatible and we also purchased the required licenses. We require you to get the two 5624 phones working on our system. I am a system Administrator so I am not having luck making them work. Everything else is currently fully functional. Here is the current status: Phones were proven to work fine when installed on a “Simple network with no VLANs” but I cannot get them to work on our current VLAN network. Mitel will not provide support to end-users. I have a programmer for the phones although I was informed that it would not be necessary The Office 250 system and WiFi SSID the phones are accessing are the same. I can ping the phones without issue. Success of this project would be to have both these phones functioning as they should in our facility. Mitel system can be accessed via Teamviewer and I can program the phones with your assistance OR if the programmer can be utilized, you can program it that way. I can use Facetime or Teams if we have to do any physically programming via buttons. Bonus request: One of the phones (Mitel 8528) shows "You have 1 message" but there is no message in the voicemail. I have done as much as I can via google searches for a solution but have not found any. (Yes hard reboot, changing phones - message stays at phone location) This project can be worked on evenings (EST) or weekends. Please be advised that my time is critical and there is NO PAYMENT (even partial payment) if you do not succeed.