Not activated Gifts on account Kryzee
Before calling out / reporting someone, please manually check the results
As a general rule, check if SteamCommunity and SteamGifts are online.
Also check if user profile is not private (If it's private ask a Support Member to check it for you).
As you'll read on each section, steam API has some bugs that may result in an inaccurate non-activated detection
Games wins not activated
There are some rare cases where some base steam games are not recognized as owned. This site uses a whitelist for not showing those games, if you find one please report it in the Official forum thread.
Also games that are "Deluxe Edition", "GOTY" or in general a bundle of game+dlcs in a single app (not in a steam package) are usually a false positives.
DLCs Wins that appears as not activated
Steam API has problems identifying some owned DLCs, so the following ones are probably activated!
Show me those DLCs!
Games no longer in steamAPI to check
This category is similar to previous one, but the dlc (most probable case) or game (rare case) is no longer in steam API database.
Show me those games/DLCs!