Thank you for you help anderson, but my issue seems bigger, i have nothing in unassigned to move it to assigned. However with some clicks and workaround i was able to add links extension but then Links was the only option i got and it removed the HTML option which i had earlier.
Also in the HTML text editor i do not get an option to insert picture, is there a workaround for that?
Or should i try uninstalling and installing the entire thing all over again? Please help.