I just did mobile check-in for my flights tomorrow. Several times there were "Server error occurred. Please try again." messages. I do not trust that it will be reliably up tomorrow so I also printed off hard copy BPs.
Because the 24 hour window has passed for the first segment some pax are transferred to the upgrade list and some cleared. As reported earlier CPUs are not automatically clearing and I called to get the second segment cleared 2 days ago. I am showing as the only one cleared in the F cabin. I expect a lot to show on the upgrade list at it's 24 hour window.