I too have no Temporal Ranking even though I've been playing since day 1. Been in same alliance since the games opening week as well. Pic below
#No Clepsydra Ranking
fleet vapor
coral sky
Dear Traveler,
I received your message and forwarded it to my team for checking. We will get back to you as soon as possible.
Thank you for your patience.
outer garnet
Dear Traveler,
I received your message and forwarded it to my team for checking...
I also have the same issue on my alt account, i stop playing that account but i attacked vortex many times and i didn't take any season ranking score (nickname: Terralt) i don't care about that account, i'm not playing that account anymore but maybe it can help to investigate the problem