I have the same delay issue with the Alarm.com version doorbell. It makes the Alarm.com app useless regarding the doorbell. Wifi and internet are excellent but the doorbell response is crap. I havent found a solution to the doorbell but suspect it is time for alarm.com to become compatible with other doorbells. My patience is running thin and cant sit around on some old technology that is unreliable. My door rings and I get the ring on my phone up to 10 minutes later. Just not acceptible.
I understand frustration, and we are happy to help. It looks like this is a duplicate post though. Please see the post and response here. There are very telling issues with your Skybell’s network connection, and while the Skybell HD model does have very high bandwidth requirements, these can be met with some network adjustments if you want to troubleshoot the existing doorbell. The wifi connection at the Skybell HD on your account is not excellent. It historically reports as very poor compared to what is required.