I will share for her. In a nut shell.
If someone assigns you to a team and you cannot unlock the editor/timer for your language, go back to the main project screen to see if there is an assigned Channel Manager. Look at the top of the page on the left under the title or the work and ratings information.
If you do not see that a CM has been assigned, then, even though you appear on the team, you will not have access to the editor/timer.
Does this seem obvious? Not always. If one knows the process, it is obvious. If one don't know the process thoroughly and does not realize that just because names appear in the Team section doesn't necessarily mean they are on a functioning team. It only means that they have somehow been involved with that work at some time in the past. No CM--no access.
The film I was interested in had subtitles that needed editing. For this reason, I thought it was a Viki designated film. But, alas, it was not. The film's splash page had members listed in the Team section, but had no CM and was locked by Viki. In fact, two of the names listed as team members were actually Viki staff. I only looked at the fact that there appeared to be team members and wrongly assumed that this was a Viki-designated film. I failed to look at the top of the page to see that there was no CM.
Hope this is helpful to volunteers who are looking for projects and need to realize that you should first check at the top of the work's splash screen to see if the work has a designated CM. If not, there is nothing to work on and no one with authority to officially place you on a functioning team.
This is just my understanding of the process from the viewpoint of a volunteer seeking projects. Please add corrections or additional insight as it pertains to the problem described above.