Capture the Queen

Three variations from the same position, each variation longer than the previous by changing a Black move.

Yes, it's the same procedure.

As a diamond member, I can create a puzzle in the Analysis app and then a function called Share provides a code that I can imbed into a post. It looks like [gid=12114099_]. That code changes to a board containing the puzzle. If you're not a diamond member you can still use the Analysis app but you won't get an imbed code. Your alternative is to copy the PGN of the puzzle; then click the board icon to open the board in a post; insert your PGN in Setup and check the box marked puzzle. Finally, click the green Insert button and click the green Post button to post it.

Does your post box have the same icons along the top?

Follow this link to get further help on posting a puzzle.

https://support.chess.com/en/articles/8639952-how-do-i-put-a-game-or-puzzle-in-a-forum-post

The app has limited functionality. Login to chees.com via your mobile's browser. That should give you full functionality to post puzzles.

https://www.chess.com/forum/view/general/membership-giveaway-gold-platinum-or-diamond?page=2#last_comment

https://www.chess.com/club/the-gms-club/join

puzzle spam !!!!

I'm sorry, I don't have a solution to a blocked browser. You could try to get assistance from the Chess.com staff. Good luck with that. I think the app aught to include puzzle functionality. There might be a security reason why the developers haven't included it. If you ask for that feature they might provide it.