I had the idea, that the star classification may affect the malfunction of the stations. So I checked the main stars and the planets the affected stations orbit to see if they have anything in common.
To my regret I can't see any pattern but the black markets. Economy is either refinery or extraction based with the exception of Rhea.
To sum it up:
Warkushanui:
G6 and M6 stars, agricultural/refinery economy.
Station orbits an EWL with an atmosphere suitable for waterbased life.
49 Arietis:
A3 star, industrial/extraction economy.
Stations orbits a HMC with carbon dioxid atmosphere
64 Arietis:
K4 star, industrial/extraction economy.
Station orbits a Class III gasgiant.
Arawere:
F7 star, industrial/extraction economy.
Station orbits a HMC.
Pic Tok:
M3 star, extraction economy.
Don't have the system data
Rhea:
G2V, agriculture/tourism economy
Station orbits a HMC with a nitrogen atmosphere
Varati:
F7, M5 and L3 stars, industrial/extraction economy.
Station orbits a HMC without an atmosphere
Ngobe:
F and K3 star, extraction/industrial economy.
station orbits a HMC without an atmosphere
Iapodes:
K6 star, terraforming economy.
Don't have the system data.
Sol:
G2 star, service/refinery economy.
Station orbits Earth.
Diaguandri:
M1, M3 and L5 stars, high tech/refinery economy.
Stations orbits an icecube, without an atmosphere.
Nganji:
G9 and M1 star, hightech/refinery economy.
station orbits a HMC without an atmosphere
Peregrina:
G4 star, extraction economy.
station orbits Undine an EWL with an atmosphere suitable for waterbased life
To my regret I can't see any pattern but the black markets. Economy is either refinery or extraction based with the exception of Rhea.
To sum it up:
Warkushanui:
G6 and M6 stars, agricultural/refinery economy.
Station orbits an EWL with an atmosphere suitable for waterbased life.
49 Arietis:
A3 star, industrial/extraction economy.
Stations orbits a HMC with carbon dioxid atmosphere
64 Arietis:
K4 star, industrial/extraction economy.
Station orbits a Class III gasgiant.
Arawere:
F7 star, industrial/extraction economy.
Station orbits a HMC.
Pic Tok:
M3 star, extraction economy.
Don't have the system data
Rhea:
G2V, agriculture/tourism economy
Station orbits a HMC with a nitrogen atmosphere
Varati:
F7, M5 and L3 stars, industrial/extraction economy.
Station orbits a HMC without an atmosphere
Ngobe:
F and K3 star, extraction/industrial economy.
station orbits a HMC without an atmosphere
Iapodes:
K6 star, terraforming economy.
Don't have the system data.
Sol:
G2 star, service/refinery economy.
Station orbits Earth.
Diaguandri:
M1, M3 and L5 stars, high tech/refinery economy.
Stations orbits an icecube, without an atmosphere.
Nganji:
G9 and M1 star, hightech/refinery economy.
station orbits a HMC without an atmosphere
Peregrina:
G4 star, extraction economy.
station orbits Undine an EWL with an atmosphere suitable for waterbased life