rtl-sdr v4

Greetings! I apologize in advance if this is posted in the wrong place. I scoured bot forums of RR, Reddit, Google searching including Youtube but decided to post here as this place has the required knowledge for what I am trying to do - if it is possible. I have an RTL-SDR Blog v4 connected...

I made an spyserver but i have a problem that the minimal frequency is 24 mhz even if the rtl sdr v4 can go lower without direct sampling i think the problem is that it doesnt allow to go lower because rtl sdr v3 cant go lower without direct sampling