PC glitch/trapped player event?

[ISNorden]

I suspect that I can't find the "punk" legendaries without getting sucked inside the glitched PC at some random Pokémon Center.   (Is that the "semi-random post game event" mentioned in the wiki?)  But I don't know how to solve the flashing-tile puzzle; stepping on the colors in order isn't something I can manage fast enough.  Am I better off restarting and forgetting about the legendaries?  If you can help, please do!

[EeveeBailey]

Try setting your frame rate as low as possible so you have more time to watch the flashing lights. If you're still having issues (and believe me, the Simon Says game isn't everyone's wheelhouse!), you might ask around in the Trading section or the Breeder's Discord to see if anyone has some extras they'd be willing to part with.