That seems like a unique answer to your question. Haven’t seen it yet.
Good idea contacting retailers. That will keep the pressure on sky3ds team and help keep the public informed.
Not being able to play pokemon sun and moon is a big deal to a lot of people and they deserve to know, especially prospective buyers.
edit: seems modchipsdirect has already acted on your email. Good on them.
modchipsdirect.com, sky3ds+ page:
“Currently the SKY3DS+ does not work with AP2.0 file which was introducted in November 17th onwards. The Sky3ds said are working on an update to try to combat this. ModChipsDirect are not affiliated with the team and are just resellers, We can give no guarantees as to how long this will take and if it is even possible.”