Galaxy is ot recognizing the itch.io versions of "Headspun" and "Wishing Sarah". Wishing Sarah also cannot be found when searching for it in Galaxy so that's maybe a GOG problem but "Headspun" can be found and could get added as "other" inside of Galaxy.
This is a duplicate of #5, however this is caused by gog not finding any information about the game on igdb.
You could fix it by adding it yourself :)
(Taken from https://github.com/tauqua/gog-galaxy-itch.io)
Galaxy is ot recognizing the itch.io versions of "Headspun" and "Wishing Sarah". Wishing Sarah also cannot be found when searching for it in Galaxy so that's maybe a GOG problem but "Headspun" can be found and could get added as "other" inside of Galaxy.