Feed Troubleshooting

Most auto-posting problems are not caused by the posting tool at all — they start in the feed, and they are invisible until something posts twice or stops posting entirely. This tag collects diagnostic guides for exactly those situations. You will find explanations of the feed elements that decide what counts as a new item, the caching layers that quietly serve stale copies, the encoding faults that mangle titles, and the status codes a feed returns when something upstream has broken. Each guide is written to be read while something is going wrong, with the likely causes ordered by how often they turn out to be responsible. The aim is to let you find the real fault quickly instead of changing settings at random.