Just try to log in again with two times click, the second try looks fine to me. But if you still getting these error you can try to delete your browser cookies and the next try will be fine.

[1] Yes each month X-CASH will distribution 1 billion coin.
[2] The reason why this airdrop have some significant reduction for the minimum payment because X-CASH already got some new member of participants to join on x-cash community.