BiKi.com has updated the iOS APP at 20:00 GMT +8 on 2019/06/19. This was due to the APPLE certificate update where new iOS APP could not be updated and the old APP cannot be used.
Please delete your current BiKi APP on your APPLE phone and download the new version from https://m.biki.com/install.
Android users are not affected.
Thank you for your support, and we look forward to your valuable opinions.