What the title says.
One month ago on the jp version of the game they also held the PSO 20th annniversary event, but the difference being that they also had an event exclusive shop and an login bonus with ragol memories, which are required for all the PSO cosmetics at the badge shop. Here are two links for reference:
So while on the jp version players could get ONEHUNDRED ragol memories in the event, NA players can't even get a single one in this version. The only way to get ragol memories right now at the NA version is by buying the 34,99$ tails collaboration pack and even there you're only getting measly five ones, barely enough for anything.
Overall I'm very disappointed but not surprised, and I'm not that naive to think that they "just forgot" or "overlooked" to put ragol memories into the event, I rather think they're just artificially limiting these items as much as possible too coerce people into spending money.