Stuck with "observer ban" - how do I get out?

Based on a lot of googling, there is apparently no real fix.

Niantic may or may not fix it, in days or weeks or months. It may be fixed permanently or temporarily.

There seem to be all kinds of rumours to the effect that certain actions might help, but the suggestions basically range from using Ingress a lot to not using Ingress at all for a long time, so there is no real reason to believe that any of those actions really helped. In particular, it seems clear that e.g. doing a lot of glyph hacking is not going to guarantee anything.

The only thing that is consistent in all reports is that Niantic says absolutely nothing, except for the standard canned response:

"We only support official Niantic Labs software. If we detect use of unofficial software that is deemed harmful to gameplay, your account may be suspended or terminated."

(The message is misleading, they send the same message regardless of whether people use unofficial software.)

Time to find another game, it seems.

---

For reference, here is a recent report from a player who has experienced this: https://plus.google.com/+DomenicHorner/posts/hmid3Mq48qS