Help! Dendrochilium has yellow and brown spots on leaves. Is this a virus?

[Newbieplantlover]

Hi all
I recently bought a Dendrochilum from a local green house. It had leaves with brown spots with a yellow outside rim. I originally believe it was due to sunburn, but I was told to ask you guys, the experts for advice on if this may be a virus. I was potted in moist orchid bark and I reported in sphangum moss.

Any advise, diagnosis and tips are appreciated

Thanks
newbieplantlover