30 Day Global Roaming Add for $125

The Global 30 Day Pass covers the US, so you won't be billed the $16/day US Easy Roam pay per use on top of it. The $125 is the one time charge for the pass itself, not a separate Easy Roam fee.

The US Easy Roam showing on your account is the standing pay per use roaming entitlement that has to sit on the line for the device to roam at all. It only bills at the daily rate when no pass is running, so once your 30 days are used up or the pass expires, roaming goes back to pay per use https://www.koodomobile.com/en/services/easyroam

Before you fly I would check Self Serve > Mobile Services > Add-ons and confirm the Global 30 Day Pass is listed there. there's a known glitch where the confirmation only mentions extra data and the pass never provisions.

To add on to Dinh, I would suggest you to wait closer to your departure date to include the Easy Roam Travel Pass to your account. Otherwise, you will waste a few days and may be forced to pay for another one if you plan to stay abroad for an extended period of time.

If I go to my self serve add ins , I see both 30 days pass and US easy roaming added . I will double check before I start my travel again . 

Quick question , does this also cover if you have a stop over / lay over for couple of days in the middle ( in a different country ) .  

Yes, since you are getting a Global Easy Roam Travel Pass.

Before you go abroad, it is important to note that only calls and text messages between Canada and your destination country are included. Anything else would be subject to a charge at the pay-per-use rate. https://www.koodomobile.com/en/help/europe-easy-roam-travel-passes

Any thought on data ?

Data use is based on your data bucket of your plan when in canada.  So if you have 50GB to use when home in canada, as an example, you will continue to use that 50GB until your billing period ends.