1. You are experiencing what many other developers have with the infamous Search/About bug rearing its ugly head. Search this forum and you'll see that contacting Roku Partner Success seems to clear it up.
2. Your feed file lacks a 'validityPeriodStart' object. Take a look at the Partner Success post for:
I have contacted Partner Success but I wouldn’t call it very “successful”... takes days to hear back from someone. What’s odd about this is that I can see it and it plays just fine if I add the channel via testing link in the Direct Publisher settings. It is only a problem on the live channel. A lot of good it does to test it if the testing tool is different than live. 😒