Party Finder Issue for Abyss dungeons

Recently me and my friends have noticed an issue with the abyss dungeons in party finder wherein whenever we make a group with party finder some or all of us cannot load into the instance while using party finder however using matchmaking seems to have no such issues. Its a rather annoying and weird bug and was hoping someone could help me out or let me know if its a known or common issue. if it is useful information we are all on Valtan Server in NAW