Vanda Leaf Issue- Urgent Help Needed

[FSUOrchids]

I bought this Vanda Pachara Delight at a Lowe's on Saturday, but the last couple of days I have noticed a rapidly spreading white area on multiple leaves, which has only seemed to get worse in the last 24 hours. I am debating taking this back to get a refund for the plant tomorrow, since I have the day off, as this is becoming an issue.

What is causing this? I have a bunch of vandas, but have never seen this before. I also did a bunch of research yesterday on potential causes but nothing seemed to match. I thought it was from overwatering at first, but I don't really water it more than once per day, and the heat index here has been around 100F or more.

Really appreciate the opinions, because if this is a serious issue I'm just going to return the plant. I like the plant, but if this if fatal I need to get my money back.