First of all, their app usually takes about 30-60 seconds to load up which is pretty frustrating when you're waiting outside your garage and trying to get in, just waiting on a spinner as it has to go talk to some cloud server somewhere.
Second, I use Home Assistant for pretty much everything, and Chamberlain has a habit of breaking their API every few months. From what I've gleaned they seem to change how they allowlist user-agent headers to try to intentionally break things like Home Assistant.
Eventually I got tired of it constantly being slow and/or not working, and I threw it away. I replaced it with a programmable Z-Wave contact relay (Zooz ZEN16). It works much better now.
Lastly, the newer Chamberlain motor units actually don't use simple push buttons anymore, so what I've done isn't even an option. I believe it's some kind of PWM over the wire to the wall-mounted buttons. I would recommend not buying any Chamberlain product because of their anti-consumer behavior.