Helo finding issue with range and positions

Hi, I have a question to see if I can “debug” where the issue is.

I have an AirNav antenna with a filter and a FlightStick dongle from RadarBox that I bought to test since October 2023, and it has worked very well. The range, although limited by some buildings and such, was sufficient for me (attached are images from the first days ).

The problem is when I look at my statistics now, and I realize that the number of planes has dropped significantly. In the statistics, a clear descending line of more than 200,000 is visible. On the map, the range is much smaller, and I no longer have as much coverage (current image attached).

The antenna is outdoors at the top of my house and has not been moved. Trying to identify any changes in the environment, I do have a couple of constructions (same height as my house) with tall cranes on both sides (100m and 50m from my house), but could that affect it so much?

The antenna has a cable (10m, cannot be removed from the antenna) that enters through a window to a Raspberry Pi 3B, which I updated yesterday to SkyAware 9.0-bpo11+1 just in case it was the issue.

My FlightAware profile is this one Bladeron ADS-B Feeder Statistics - FlightAware where you can see how it drops both in range and number of planes over the last month in the “positions” window

Captura de pantalla 2024-05-30 a las 16.42.01

What can I try to fix it? Could the stick have broken? Could it be the summer heat hitting the cable?

Thank you very much in advance any help is appreciated

How did you waterproof the connection between the antenna and coax cable?
That is where I might start an investigation.

Did the appearance of the two cranes coincide with the drop in range? Are they in line with the normal flow of aircraft that have now diminished?