Glow has my cycle wrong I think.

Linz • 25 years old,, TTC #3. I have an 8.5 year old DS and a 1 year old DD. My husband and I have been together for 7 years.
I have 32 day cycles but glow has predicted my next one to be 35 days. Not sure if it's a glitch or what. I'm supposed to get AF 4/8 but glow has it not starting until the 11th. Any advice?