It's a mystery. I just posted this, directly from HD conversations, did not have to pick another forum beyond this one (auto selected) from my Macbook pro. Sorry, I have no idea. Sometimes clearing your cookies and making sure you have the latest updates on your software helps.

Glad it worked - sometimes Houzz is a complete mystery. There are days when I can't post a photo from my Macbook but I can from my iPad. Then some days I can't even sign in using my iPad or iPhone, but I can with the laptop.

I just received a new Macbook and I hope when I transfer data I can still get here. I fear I'll end up with a new sign in.....or lost in Neverneverland.

I can't currently post a new message here from my iphone - it doesn't just post without me picking another forum. At one time it would post if I also picked another forum like Test. So I did that a few times. Then for a while this conversations forum appeared in the list so I picked it and that worked. Now it's not there (or I can't find it) and it doesn't post here if I pick Test. I've pretty much given up on posting anything new from my phone. It works reliable on my PC desktop and on my ipad - at least last time I tried it - no need to pick a second forum for a new post.

I can only get to a conversation link to post using this link to open conversations if I enter the site through houzz‘s topic link it will not allow me to post on my iPhone or iPad no issue with Samsung or my chrome book. I used this link yesterday and was successful at posting after a few months being unable to. https://www.houzz.com/discussions/home-decorating-conversations

Rick, you'd probably have better luck with your question posted to the Computer forum: https://www.houzz.com/discussions/tag=234
I don't use apps if I can help it, so I'm not a good resource for info.