It is not a problem of wordpress. These are all bugs from templatetoaster:
Menu is not working on mobile browsers. If you have 10 Subpages of a menu point you can`t scroll the menu down.
Hyperlinks are not working if you set them on pictures (Parse error)
If you insert a button and link to internal pages was not working the last 5 months. (I think this is a critical feature, no one is working with buttons??)
Footer-Icon Hyperlink is never saved. It is every time set back to www.templatetoaster.
These are only a few bugs.
And if someone telling me that version 6 is NOT crashing, then you have no idea about templatetoaster or you are an employe of this company.