i trained my eevee to lvl 40 but i didnt chek his trust. i dont think its very good. Can it still evolve into umbreon/espeon?
It can keep training it and soon you'll have a new espeon or umbreon
That Eevee is not happy enough to evolve. Try to give that Eevee some suppliments. Then check its happiness in Goldenrod City.
Also you can go to the Underground (Golderod city) and give Eevee a haircut. This makes Eevee happier.
P.S. Eevee evolves into Espeon in the morning and Umbreon at night.