Email sync for mac/ipad/iph has suddenly stopped working on home wifi but working on other wifi

[#1]

Hi

My home email sync was working perfectly on my mac, iPhone and iPad on my home plus net wi fi until about 3 weeks ago, when it suddenly stopped working on all of these. My work email synch is still working on all devices with home wi fi and others can access their various email sync accounts. It is doctors.org.uk email account

I have tried deleting and re-installing on all devices - and also changing name and password for Wi fi - all settings including ports seem to be correct.

Any suggestions 

[#2]

The last time you disconnected/reconnected was about 3 weeks ago. Try power cycling your router and see if it helps.

[#3]

Hi

Unfortunately that hasn't worked.