what's going on!?

Beverley
Was checking my Glow cycle this morning and it says that the best time to conceive is about 4 days later than it was yesterday! So checked my cycle length on here and it's changed to a 29 day cycle!? That's not right, I have a 26 day cycle!!!! 😡 Thanks guys for confusing me a little me a little bit more! Wouldn't mind so much if I was on AF  but I'm in the middle of trying for goodness sake! 
I don't use this app as the be all and end all but it is support!  Has anybody else experienced this with the update?