@Tgez Thanks so much for sharing all the detailed info, this issue you are experiencing sounds unusual/abnormal. To address the issue and try to fix it, we would like to have a specialist look into...

@PremekK Hi, Thanks for the good news. It is quite strange and please feel free to update here if the same issue started again and do remember to save the system log; Thank you very much.

@ColinW Thank you very much for the detailed information. I would like to forward your case to the senior engineers for further assistance; Please have a check of your email box later.

@Mahe89 Hi, is there any error message when you failed to connect? (PS: the default wireless password is on the back label and it is 8 digits) Thank you very much.

@Druidspell Thanks so much for sharing all the detailed info, this issue you are experiencing sounds unusual/abnormal. To address the issue and try to fix it, we would like to have a specialist look...

@Tgez Hi, If all 3 three Deco units lost the connection, there is no need for the signal source now. May I know the model number of your Plusnet router? Did Deco M5 work on the wireless router mode...