Help... some servers suddenly stop sharing !...???

[yvessr]

Hello ALL,
I have a strange problem and I cannot find the solution... please help me !
I am sharing since more than 1 year with a restricted number of 7 peers...
suddenly, now 6 days ago 3 servers stopped sharing, all exactly at the same moment and I do NOT see any client anymore ! I tried several things; rebooting modem, PLC-network end even reinstalled from scrap my enigma2 and reconfigured CCcam.cfg... NO cure; still same 3 servers missing !!! I contacted them and none of them had problems... What can I do ? What can be done?... Can someone PLEASE help me