With Chrome, I can play both versions. With Firefox, I can play old version but not new version. Sorry for unclear description.
I know the old version will be eventually shut down because Nordeus does not want to support it. Have you heard somebody hinted that it will be shut down in near future?
I agree that it is not worth to upgrade system, or install new browser, etc for new system.
I do not think new version is very bad. If it demands less computer resources, I can tolerate its inadequate designs for PC users. But I really do not enjoy the new style of training. As I don't expect I can play the old version forever, this season is almost definitely the last for my teams. I am enjoying the challenges in this season, and I will complete this season even if I have no choice but use new system.