Recently, Photobucket.com has changed their 3rd party hosting permissions from free to paid.
Full changes here: https://blog.photobucket.com/please-review-latest-changes-photobucket/
https://www.ghacks.net/2017/06/30/photobucket-now-charges-399-for-third-party-hosted-images/
Photobucket wrote:Non Plus 500 Account subscribers that purchased after June 1, 2017 will not
have access to 3rd Party Hosting.
4. Are my pictures still safe?
Yes! All your photos are still available by logging into your Photobucket
Account. Photobucket has only restricted the ability to view your photos on
3rd party sites.
Full changes here: https://blog.photobucket.com/please-review-latest-changes-photobucket/
https://www.ghacks.net/2017/06/30/photobucket-now-charges-399-for-third-party-hosted-images/