If you want something really really stable I can recommend 2N a lot. They cost a bit more,as they are mainly geared towards professional users,but they absolutely know what they are doing.
Whole thing works completely "off the cloud" and without any subscriptions (there is one available for their app - but that's more a convenience feature, they literally tell you how to use other apps).
The whole environment is based on plain old SIP so it works with basically everything - I have an answering unit, but I also can use my snom phone or my SIP app to answer the door. The door unit can simultaneously be their own PBX and/or integrate in an external SIP environment.
The camera itself can also provide RTSP,ONVIF,etc. if needed and plays along with Fregate,etc. quite nicely.
And the automation interface(which requires a add-on licence, but single payment) is based on node red.
Integration in HA is a breeze due to that.
It works with PoE, but 2 wire conversion kits are available. And LTE.
I can absolutely recommend them. (And I do not sell them,don't worry. Just a happy user who got screwed over by other manufacturers too often)