Having issues with Infiniti pro access points not working optimally. The router is a Bell Home Hub 3000. Cables map correctly. Wifi from the router works 100% of the time. Customer is reporting wifi working only 75 percent of the time from the APs. Has anyone has similar issues with these ?

Using the wifi in the router and the APs isn't going to work well. Set channel and power levels? It sounds like his devices are trying to connect to the router more than the APs.

Not familiar with the Bell units, but I would disable the WIFI on it if possible and only use the Ubiquiti APs. Have never had problems with Ubiquiti APs in houses and have them on many different providers (we don't have Bell Fibe in our area). Also make sure the APs are set properly.

Lastly if they are using iPhones you may want to reduce the broadcast strength on the APs. it's a known issue with iPhones in that they will hold onto a connection for as long as possible. If they were originally connected to the Bell unit and move to under the UBNT AP but the Bell signal is still available the phone will stay on the Bell signal. By disabling the Bell WIFI and reducing the broadcast strength you are reducing the overlap and forcing the phones to rescan for the stronger signal. This may also require you to add a couple more AP's to help fill in dead zones

That worked. Thanks. Had to add another AP but it all worked out.