So I have this really nice fern which I bought as Phlebodium aureum, but I did some research and it appears to be rather Aglaomorpha coronans.
Unfortunately some leaves get brown and yellow spots and the small ones get kind of papery.
It seats in a terracota pot (I repotted it a couple of weeks ago), around 3 meters from my East facing window (but it gets also some reflected light in the afternoon). I added some orchid mix and sphagnum to the potting mix and I water my plant more or less once a week and I mist it a couple of times a week, just to keep rhizomes moist.
It pushed some new growths so I guess it's not totally unhappy, but I am quite worried because of these spots. I will be thankful for any advice!