The PON light should be steady green but the LAN light will flash to indicate data transfer.
@cameronbp wrote:
i tested on bt app it says 941mb download 112mb upload but my stay fast is 150mb and10mb idk why thoe my stay fast should be 700mb if i ordered 900 full fibre not unless i havr to wait for stay fast to change in next ten days
these speeds are exactly what you would expect for fibre 900 but sounds like your MYBT has not been updated from GFAST to Fibre 900 but should happen next few days