always getting wyvern egg? “Only the Good Eggs” quest

[Dede Gemes]

always getting wyvern egg, but the quest need it to be a "quality" one, any info?

[Cathulhu]

You must do the exploration on High Rank, not Low Rank.

[Metaspark]

quality wyvern eggs are from high rank

[Popcorn]

High rank, hub only

[Dede Gemes]

thanks appreciated it