You may have the latest update to RootsMagic 6 but it still won't work with FamilySearch. You need version 220.127.116.11 to do so, due to changes FamilySearch made to the FT API login procedure.
If you don't want to upgrade you can install both RootsMagic 6 and RootsMagic 7 Essentials on the same computer. RootsMagic Essential is going to give your version 7. The file format between RM6 & RM7 is the same, that means you can open the same database in either version. Just don't have it open in both versions at the same time. Once its open in RM7 close the database and then open in RM6 with no issues.
If the FamilySearch icon is missing you can turn it back on.
Go to Tools>File Options>FamilySearch and check the box "Enable FamilySearch Support".
If you need to turn on the LDS ordinances then go to Tools>File Options>General>check the box "LDS Support".