Constant Secutiry Alerts

Hi I am using windows 10 and every few minutes I am getting a security alert about an expired certificate for flogs.com. I may at some point have used their calendar extension but I am sure I deleted the program as now all I can find is a registry key that relates to flogs.

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.com/search?q=flogs&form=WNSGPH&qs=AS&cvid=e76c4dec24f643328f2ed7ec58970633&pq=flogs&nclid=F3E1DD3AB0CB06AF70697C998E6BE17C&ts=1453832049341&nclidts=1453832049&tsms=341

I see the open with for this key is set for chrome.exe.

I am assuming (ass-uming I think)  this is what is causing the problem since it is the only thing on my system that is associated with flogs at all. If I remove this it will create even more complications? This alert is making me crazy.

I have deleted chrome.exe from the OpenWith a registry item but I am still seeing this message constantly.
I am not even sure what software is initiating this error at this point.

I have attached captures of the warning and the certification path from the  properties panel.

RL
security-alert-error.jpg
security-alert-properties.jpg