I do not have access to The Borderland Ruins (Slaughter) or Frontline Roulette

Time: 23 JAN 2015 17:06 EST
Frequency: Constant
World name: Famfrit
Character name: Sakura Ailorn
NPC name: N/A
Monster name: N/A
Class/Level: Bard/50
Party or solo: Solo
In-game time:10:06 p.m.
Area and coordinates: N/A
Steps:
1. Log in.
2. Open Duty Finder menu.
3. Notice on Roulette section that frontline roulette is not present.
4. Scroll to PvP section.
5. Notice in PvP section that i do not have Borderland Ruins (Slaughter), but i do have the following duties: Wolves' Den lv 30, Wolves' Den lv 40, Wolves' Den (Matched Party), Wolves' Den (Light Party), Wolves' Den (Matched Party) ilvl 80 synch, Wolves' Den (Light Party) ilvl 80 synch, Borderland Ruins (Secure)
6. Log out.
7. Repeat steps 1 to 5.

Connection Specs
- Type of internet connection/provider: wifi/gowifi
- Modem maker/model number

Model Number of the PlayStation®4 You Are Using
- Model Number: CUH-1001A

You need to talk to an npc to unlock it.

Upon unlocking Frontline, players can speak with one of the following NPCs to gain access to the Borderland Ruins (Slaughter).

Maelstrom
Limsa Lominsa – Upper Decks
Maelstrom Command (X:12 Y:12)
NPC: Foreign Levy Flyer

Maelstrom Command (X:12 Y:12)
NPC: Foreign Levy Flyer

Order of the Twin Adder
New Gridania
Airship Landing (X:11 Y:13)
NPC: Yellow Serpent Flyer

The Adders' Nest (X:9 Y:11)
NPC: Yellow Serpent Flyer

Immortal Flames
Immortal Flames
Airship Landing (X:10 Y:11)
NPC: Free Brigade Flyer
Hall of Flames (X:8 Y:9)
NPC: Free Brigade Flyer

Source: Patch 2.5 Notes