Canada 5.1 GHz band error

I'm using a 40 MHz channel on a PTP670 and it allows the EIRP to go up to 36

Maybe I need some consulting help from Cambium? Another question I have is about the 450b subscriber. The User Guide seems to suggest that the 450b subscriber can transmit at max power in the 5.1 GHz band, unlike the 450i subscriber, however LinkPlanner shows the maximum EIRP as 31 for a 450b subscriber

Additionally, in the 5.8 band, the User Guide shows a maximum power limt of 21 dBm and EIRP limit of 36

However this doesn't even make sense, if the power is 21, and the antenna gain is 23, the EIRP is 44. LinkPlanner shows 44 as the EIRP limit for a 450b in 5.8. Which numbers do I believe?