Do you have a free Flickr account?
Do you have more than 1000 photos and/or videos uploaded to it?
If so, in early 2019 you will have to either upgrade to a new paid for Flickr Pro account, or download your content beyond 1000 photos and/or videos off the platform. You will have to upgrade or download excess content before January 9th 2019.
If you don't download excess content before 5th February 2019 it will be deleted, starting with the oldest content, until your free account reaches the new 1000 photos and/or videos limit.
The new Flickr Pro account, offering unlimited ad-free storage will be $49.99 (approx £40) a year. Upgrade your free account before January 9th 2019 and you will get a 30% discount off your first year.
https://blog.flickr.net/en/2018/11/01/changing-flickr-free-accounts-1000-photos/