Help! What's happening to my Monstera Thai Constellation?? Browning patches (not the tips)! sign of A FEW sparse webs in the stem crevices, no sign of crawling bugs, living indoors (hot & humid 50-80%), 2 wks old in original pot/soil & watered when moisture meter =2. What is it & what can I do??

how do I stop the spreading yellow/brown on my anthurium Crystallinum? healthy established roots, recently bought. Please help!!

Quick help!! Spreading yellow/brown edges on Crystallinum :( see comment below for to solve this mystery