Yesterday, While browsing math.stackexchange.com I found a little popup, saying settings. I clicked it, and I was able to choose a TeX renderer for the forum. I chose another, and now all my TeX is messed up (not displaying correctly next to other text, the reserved space for the TeX is to small).
I have tried holding a piece of math with my finger, pinching it, holding it with one finger and tapping it with the other. Nothing worked, I couldn't get the popup to show again. Even on the non-mobile site I couldn't work it out.
Thanks in advance.
PS, I can't add a screenshot because I'm on my iPod, and I can't reproduce it on my desktop.