Tapatalk is very good for replying to PM's.
The ODT app is a train wreck and I regret ever going that route, just use tapatalk.
Oh I can type them all day long. There's some kind of relationship between the length of my post and the likelyhood of the wife calling and deleting the whole thing tho. It's like my phone alerts her phone when I have typed so many characters so she can blow it all out before I hit "submit message" or "Post reply". Last time I had typed for 3 or 4 minutes(i'm slow) and my thumb over the submit button when it rang.
I will look into your suggestions.