For appeals, questions and feedback about Oracle Forums, please email oracle-forums-moderators_us@oracle.com. Technical questions should be asked in the appropriate category. Thank you!
You RSS Feed has <entry>s and not <items>s and most RSS feed clients and web widgets don't recognize the <entry> tag.
https://forums.oracle.com/ords/apexds/feeds/domain/dev-community?category=apex
Please change them to <item> tags