It is being stated that on their site that "Currently, Bucket is only available in the United States. However, we will be expanding internationally in the future, so stay tuned!". So, I think it is almost month since this was written and what I need to know is the status of the update.
Do they have kyc for thier investors? I think its pretty easy to ressolve restrictions regarding locations even if it is only intended for US residents only.
in any case, developers should provide us with information about whether there have been any updates on this issue. I hope not only US citizens will be able to use the platform.