Hey there @Edispilf, welcome to the Discourse! Did you receive any UI errors when trying to delete the orders? Also, can you please confirm your version number?
Is your issue similar to either of these?
http://discourse.stonehearth.net/t/too-many-queued-items-will-remove-all-items-and-prevent-crafting/18309?u=jomaxro
http://discourse.stonehearth.net/t/crafting-menu-queue-and-open-sign-disappear/17686?u=jomaxro