Sunburned paph and other problems

[murphy48]

I went on vacation for a week and came back to a few problems. The most obvious was what I think is sunburn on my Phaph. malipoense, one leaf looks really bad
Someone came buy to water everyone but it was unusally hot and a few are really dry, one lost all its flowers (my tolumnia) and another paph appears to have what I think is rot. The last one I'm worried about I think got too dry and the leaves are a little wilted. Can anyone give me some advice...

Is there anything I can do with the "sunburn" if that is what it is. Should I leave the leaf alone or is there something I can do to help.

What should I do about the brown spot (rot?) I think my paph got from water being left on it.

Do I just water to help my paph with wilted leaves?

Thanks so much!
Kristen