Doorbell not compatible with my independent porch light

Installed a plug in video doorbell… works great I thought… I went to my porch in the evening and my independent motion sensor light didn’t come on… So I switched off the doorbell and the light then came on… I switched the doorbell back on and it would not connect to the WiFi while the light was on …once the light went off on the timer. … the doorbell reconnected… I went to the porch and once again my porch light did not work so I put my hand over the doorbell and sure enough…the light came on again… Any ideas please ? I’ve tried Ring technical support but no joy there.