I was following these steps for the Corin Rouge Sidequest:
1. Buy the Pokemon in the Grand Hall to have it stolen ~ No one is selling any Pokemon in Grand Hall for me.
2. North side of Peridot house to locate them ~ House is Empty
3. Battle a trainer in Obsidia Slums, where you talked to a box a lot ~ 1 Part of the Slums has been restored. The Other section has Trainers that don't battle now.
4. Depending on your gang, talk to someone in north Lapis Ward, or northwest of Spyce - I chose Aqua - Just 1 Member is there tending to a garden.
5. Depending on your gang, Defeat a trainer northwest of Spyce, or north Lapis Ward ~ No Trainers are available to battle with.
6. 7th Street southeast corner has a person selling the Pokemon. Corin Rouge will steal it and run off. ~ No one in 7th Street has the Stolen Pokemon because I was unable to buy it in the 1st instance.
7. Speak with Police Chief in Jasper Ward after the city is restored. - Police Chief is happy since things are stable.
8. Battle Corin-Rogue in Malchous Forest, northern Peridot Ward and Azurine Lake west of Coral Ward - I Checked in Malchous & Peridot but not Azurine Lake as yet. https://imgur.com/Q8gd0bV https://imgur.com/ZtSycV8 https://imgur.com/9yfvlTt
9. Flowers in back of Coral Ward Gym ~ Not here https://imgur.com/OSScJ3x
10. Talk to Corin-Rogue in northern Peridot Ward again multiple times. He will jump on a train and leave for the desert. ~ Doesn't Apply
11. Speak with the Police Chief again in Jasper Ward to obtain the Safety Goggles - I wish
Worse case Scenario - I can restart the game & trade over items to main account.