Good question, and the key is that One Entry describes the entry limit, not where you enter. A sweep is one-entry when the rules allow only one entry per person, or per household, for the whole entry period, however that entry is made. So an Instagram or TikTok sweep can still belong in One Entry if you are only allowed to enter once, even though it is also a social media sweep. The practical check is always the official rules for that sweep: if they say one entry per person, treat any extra entries as risking disqualification, and do not enter again through another account or device.
