I did the same thing.
Don't do it that way. Tuning to a frequency is crap on sdrtrunk.
Import the system from the Radio Reference tab.
https://prnt.sc/1rtkyae
Login at the top right,
set your country, state, county.
Click System under the county trunked systems
Click System view tab under the system you choose
Click the site you want to follow
On the bottom right, give everything a name so you know who it is.
Click NEW ALIAS LIST and give that a name - this is where all your talkgroups will be in.
After you do that, click Create Channel Config
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You're gunna have to go back to the RR tab and click TALKGROUPs tab now. You need to import them so you know who they are
I would suggest leaving "mute encrpyted talkgroups" checked. No reason to have it unchecked unless you want to hear the static and blippings.
After you click Import, go back to the channels tab up at the top left.
click start/play
if i forgot something or you need more help, just quote me