Hi Lizard,
Welcome to the Avast forum, although I am no expert I will try to help you
I believe that the two services that you are missing are the Mail scanner and the Web scanner!
Please look in Control Panel, Add/Remove programs and click on Change/Remove Avast.
Open Change and make sure that all of the options are ticked in Resident Protection, if they are not, tick ones missing and press next .... Avast will then update its components. You may have to re-boot your computer at this point to see if the scanners are functioning correctly.
If all of the options are ticked or the update did not correct your problem.
Then in Add/ Remove programs open Change/ Remove Avast and on click on the Repair option, hopefully this will fix any missing/corrupt parts of the program.