Hello,
I started to make some changes to a fresh install of betheme v15.5 (i'm using a child theme) and I had added a few CSS rules under the Custom CSS tab, adjusted the new logo under the Global tab, etc. I made sure to hit "save changes" at every step, but after I refreshed the site it all reverted to the old config! I lost the custom CSS rules, the logo adjustments, everything! WTH??