Glow Support

Accirding to Glow my average cycle lenght is 13 days. Sometimes I have brown spotting the first two days then stop for a full day. Then on the fourth day it begings again . My periods are not red but rather it is always brown and looks like spotting. I cannot log my unsual periods as Glow says that I cannot add a period as I am ending one. Please fix this...I don't want to make a note of it since I cannot look up my notes