Hello Christer. Community members help each other everyday. I'm sure several have looked at the request, but attempting to explain how to fix a responsive issue isn't easy. If you aren't using a responsive theme, then that may be your biggest issue. If your member base is heavy on mobile, it would be worth investing in one. I am no pro, but I have managed to fix several things on the Simplicity theme to make it more responsive by reading up on how to use media queries, and using the developer tool in Firefox to view the site in responsive views to make adjustments with inspect element, and apply them to the specific media query. If the problem is simple enough, someone would be glad to help out, but screenshots of the issue, what theme you're using, and details are very helpful in understanding.