There is no information provided on what is the reason for that. That said, if the area is too cloudy, preventing quality geolocation of the acquired scenes, such data is not distributed. So I’d say there is a decent chance that clouds are a problem.
If you want a direct answer from them, you can ask a similar question to their forum:
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There is no information provided on what is the reason for that. That said, if the area is too cloudy, preventing quality geolocation of the acquired scenes, such data is not distributed. So I’d say there is a decent chance that clouds are a problem.
If you want a direct answer from them, you can ask a similar question to their forum:
Thank you