Axiom... as I recall you are in the PRC. The PRC seems to block Trek. It may have to do with your local censors.
If you are not, see if you have the most recent version of your browser. I know that older versions of, for example, Safari, loaded on older Apple operating systems do not handle a lot of the current software which permits websites to show motion.
If neither of those things is true, all I can say is that I will not be rewatching the first parts of Exeter's second episode again until the last part is released... or hell freezes over, whichever happens first. Yes, Dennis Bailey has produced a brilliant script, but there are hundreds of completed fan films I'm still working my way through, there is no reason for me to frustrate myself with this excellent, but incomplete, effort.