@Doramius here is another thread, same issue
Same problem as well, both android tv and phone app crashes with pre-roll.
Hope they repair it in the next update 
Sideloading an APK is pretty simple for a lot of technical people. However, a majority of people buying these devices donāt have that high of technical skill, let alone know how to Google search for instructions on how to adjust the settings to be able to install the necessary apps. If the app itself is not working, then it needs to be fixed. The workarounds are negatively impacting the Plex experience for the Host and other clients.
@BigWheel @sixones Any updates? Iām open to doing more testing and sending logs if needed. Please let me know. Thanks!
Bumping - any update?
guys is it fixed now?
Thereās a new release as of today, I checked under āFixesā and nothing about the extras/intros as of yet.
@sixones @BigWheel I tested again with the latest version 8.29.0.30433 (b3774acd) and the issue still persists. Please let me know if you need additional logs to continue troubleshooting. Thanks.
When it is fixed there will be a note about it in the release info in app store and Plex for Android - #414 by sixones. Iām sorry I donāt have an ETA
Adding my name to this issue. I just crafted a lovely long post about it, and didnāt find this one until after that. 
thanks @AmazingRando24 . Just gonna link your post here incase your logs in other post become useful so they are easier to find.
This has driven me mad the past month. Thought it was an issue with my server.
Any update on this? It happens on both of my NVidia Shields. Super annoying. I"m having to use Apple TV at the moment.
Any update on this?
Nothing that Iāve seen⦠Itās super annoying⦠I actually installed and am playing with Jellyfin.
The bad part is this seems to be a bug in the client so you canāt easily just roll back the server version and fix it.
Itās been working lately for me. Just make sure the Fire TV app is updated.
I just tried it⦠and SOME of the intros are working. But many of them are still causing the client to crash. Some weeks ago, every intro would cause it to crash. Something seems to have changed, but itās definitely not reliable yet.
I hope this gets fixed soonā¦I miss my pre-rolls! ha
Just piling on this bandwagon. It looks like there has been 2 releases of the Android client since this was acknowledged by the Plex team and still no complete fix.
I miss my pre-rolls too! Please fix this!
Iām having a similar issue on my Shield Pro 2017
I reported the issue here land my log is attached to that post.