So okpay was just bought by money polo. Now its seems that they are asking all okpay users to get verified again?? This sounds a little bit crazy! Imagine the work involved!
This really sucks but there is no way but to abide by their terms which you had checked to agree, albeit without reading all the stuff. Are you sure it is for all accounts or is it just you? If it is for all users, perhaps the country laws of the new owner needs some data which was not needed by the country of the previous owner.