Welcome to Houzz. I post with my android and I don't have a mobile app for it. I get the same things happening with my phone when I'm on this site. You can post without an app if you are able to get past all the obsticals. Usually if you try to type a comment to someone elses thread and your words dissapear it's because that person posted the thread from a faq page. The curser thing. I know what you are talking about. That IS very irritating. Somehow I get around it though. I pretty much do everything here on my Samsung s8. The houzz private messaging has some bugs too. I've had trouble with not recieving messages and sending messages that don't arive.

just as Jay said..I also KNOW what you're talking about..I've had the same experience..sometimes it's fine and sometimes it's not..

Comments that I have seen would indicate that posting or accessing the site from a phone is generally more problematic than using any other type of device. I never bother, as the phone screen is just too small to be easily seen (even when enlarged, things vanish off to the sides) and I don't text well....or fast :-) I really only use my phone to communicate, take photos and for the GPS. Occasionally I will Google something but only when no other device available.

Sometimes I get fed up with it and click "request desktop site". That clears up most of it. Seems counter-intuitive, but there you go.