I didnt want to have to do this because i must be the only person in the game that buys these five daily crons (1825 free crons at the end of the year, not great but they all count imo...) and i had figured a workaround until now but now it somehow just wont work at all.

It keeps saying i exceeded the daily limit despite that i am hours after the reset and the text not being red like when you ACTUALLY have bought the daily limit. Clicking buy multiple always shows 0, you can't change the number, but until now i could buy all five crons individually at least. Except now that also doesn't work. Im pretty sure it started after the maintenance before last. 

Buying items through Rebinia seems to have some glitchy buttons. I attempted to buy Ravinia's Moss Remover to no effect several times, and one time giving me a purchase for a previously clicked Oquilla's Flower instead. Purchase seems to go through correctly depending on previous selections clicked (but not a great thing to test player-side.)

edit: and just now single-clicking through to a successful moss remover buy. I have no idea....

edit, edit: Realizing my Moss Remover / Flower issue is likely the same as the Cron purchase problem: Sometimes clicking the daily Cron selection highlights the Crons, but the menu logic must still be pointing to a previous selection where the max purchase is 0 (that is, the game attempting to purchase the daily caphras or the memory fragments purchased immediately prior)... seems likely the case?

edit, edit, edit: no, sorry, that doesn't directly account for the single Buy button sometimes working. I don't know whether changes had been made in the past weeks though; I haven't spotted it in the fixes lists.