Orchid Leaf Rot. Phalaenopsis orchids generally like a bright location to grow but dont do well in direct sunlight. Constant wetness will cause the roots to rot.
Insufficient light is the most common cause of failure to re-bloom your orchid. Fiddle Leaf Fig Brown Spots From Root Rot. If the humidity is less than 40 use a spray bottle with a fine mist setting to lightly mist the orchids and their potting medium once per day.
Arguably the most common cause of brown spots in a fiddle leaf fig is root rot from over-watering.
Make sure the soil is dry to the touch before watering your post-bloom orchid. Insufficient light is the most common cause of failure to re-bloom your orchid. If you keep up the same routine for watering you will promote root rot. In nature they grow attached to the trunks of large trees below the leaf canopy so they are familiar with bright but indirect light that passes through the canopy.