Canadian workaround for the Wellue O2Ring-S (1s intervals)?

[rrio]

New member here. I’ve used the original Wellue O2Ring for 3 years to track my oxygen levels alongside my BiPAP and supplemental oxygen. Mine is currently held together with tape and failing, so I need a replacement.
I really want the new O2Ring-S model because it records at 1-second intervals instead of the old 4-second intervals. However, both the official Wellue site and Amazon US block checkout when I enter a Canadian shipping address.
Has any fellow Canadian found a legitimate workaround or an international seller that ships the "S" model here? Or should I just give up and buy another standard model locally?
Thanks for any advice,
Rick