Yes, I see, you are in arcade mode, in this mode, LotAtc automatically choose a symbol for you and I disable the symbol combobox to make LotAtc more easier for starter users.
Lot of users are in realistic profile or more, see https://www.lotatc.com/documentation/detection_profile.html for more info, you must change this on server side in DCS options.
Always in my scope with airport view and datalink. Airport view is well advanced, I will switch on SRS after that. I prefer take my time to make each great.