My Euronews signal is MUCH better than any other freesat one (that I test for)
BUT I have a client who’s is weaker and by the time it goes through the surge protector it is too weak to see
Currently Lynsat reports:
Astra 2F 28.2°E 12663 H DVB-S MPEG-2 22000 5/6

I read this:

Euronews is not a Freesat channel as far as I am aware it is a sky FTA 12560 V 27500 2/3 according to lyngsat however that frequency is very close to the DECT phone frequency problem

Hi band problems:-

12480 to 12500 MHz (10600 MHz LO) IF is 1880 to 1900 MHz

try disconnect the power from your DECT phone and scanning again