Lots of RSS feeds and some of them get paused. TB set to check for updates every 15 min. Portable TB latest version 102.9.1 64-bit but it's been happening some iterations back.
About Feeds URLs and TB on another issue, why TB can't handle https scheme for feeds.feedburner.com? For example, adding the following url TB says it is not authorized. Code: http://feeds.feedburner.com/cracksurl/post Spoiler Only http scheme functions. Curiously, the https url works on other RSS readers.