The only data the extension collects is your IP address and URL of any web page you visit, assuming the website is added by you to the list of supported websites and you haven't turned off connection to the server in the settings. Timestamp of each request is also saved.
When you use the site dates.oldera.org to view data stored on the server, the information about your requests including your IP address, search string and filtering you set there is also logged on the server.
All the information I collect is saved as logs on the server and is used for analysing the loads on the server. It will never be shared with any third party.
In one of the future updates of the extension I may start collecting data on your usage of the extension’s popup window using Google Analytics. I will update this Privacy Policy in that case.
If you have any questions about this Privacy Policy, you can contact me by email: kgrig.oldera@gmail.com