About a month ago there was an update thread mentioning that an issue was fixed that caused certain items like pets and chairs to not be possible to be stored in the Cash Shop inventory. Source: https://royals.ms/forum/threads/new-source-update-43-03-10-2017.104567/ However, at this time I'm still unable to store any of my pets in the Cash Shop as it will tell me that the request has timed out. Spoiler: Screenshot I hope this can be looked into again as it is personally bothering me a fair bit, mainly because I bought these donator pets for different characters on this account, but moved them to Demiosa's inventory because I just wanted to have some fun with having 3 pets out in the early days of the new source. If this can't be fixed, I'll probably be forced to spend NX on buying pets for those characters that can't get their pets back because of this, which is an NX sink I'm not really hoping for right now. If this has been reported already then I'm sorry, but I couldn't find any active threads from after this specific update with either search tool or browsing through 5-6 pages of bug reports.
This still happens to me. Bums me out since I bought a pet then changed my main on the same account and would love to be able to multipet them.