The "Solved" icon is the "Check mark" at the bottom right corner of your Original Post or Topic. 🙂
I'm just a member here who used to be a newbie.
The case: When I actually put my keyboard where my forum is, and became #172. Can you imagine if you had to build this forum yourself? How kind and patient will you be? The best way to say thank you is say it, write it, and then head on over at Wordpress plugin page and rate wpForo 5 stars - by clicking here.