no banner displayed on android

Hi!
I`m trying to implement banner ads. I can see grey placeholder in editor, but nothing at real device.
Same situation on 2 devices, one is added as a test device in dashboard and other is not.
I have double checked store ID and placement ID.
Also tried force disabing test mode in dashboard.
Logs show production mode and there is a message:

AdPlan received with 2 campaigns and refreshDelay 7200

Also there are some errors:

02-22 11:45:04.839 2937 2937 I chromium: [INFO:CONSOLE(4082)] "Uncaught (in promise) [object Array]", source: file:///storage/emulated/0/Android/data/com.mart.kozlik/cache/UnityAdsCache/UnityAdsWebApp.html?platform=android&origin=https%3A%2F%2Fwebview.unityads.unity3d.com%2Fwebview%2F3.0.1%2Ffad24a8e85cf946b75431ad6a01989de327653ef%2Frelease%2Findex.html&version=fad24a8e85cf946b75431ad6a01989de327653ef (4082)
02-22 11:45:04.937 2937 2937 I chromium: [INFO:CONSOLE(0)] "Uncaught (in promise) [object Array]", source: file:///storage/emulated/0/Android/data/com.mart.kozlik/cache/UnityAdsCache/UnityAdsWebApp.html?platform=android&origin=https%3A%2F%2Fwebview.unityads.unity3d.com%2Fwebview%2F3.0.1%2Ffad24a8e85cf946b75431ad6a01989de327653ef%2Frelease%2Findex.html&version=fad24a8e85cf946b75431ad6a01989de327653ef (0)

Googling errors lead me to this, but I dont know what to do with this info and I am not sure this is the reason.

So I suppose, content is successfully recieved, but cannot be displayed.

I only need banned ads, no video, so i use:

using UnityEngine.Advertisements;

But previosly I tried installing both 3.0.1 from asset store and 2.3 from services window.
At the moment checkmark "Enable built-in Ads extension" is enabled, but I see 3.0.1 in logs, which is mismatch as I suggest.

Could it be some conflict between Ads SDK versions?
I am not really sure which one Im using now.
How do i find out? Which one should I use? Should I delete some files from project?

I`m new in programming and I`m stuck, so any help would be greatly appreciated.
I will gladly provide extra info or make tests, if needed.
Thank you!

 

Tried switching to asset store and comletely disabled service as described here

Also tried deleting UnityConnectSettings.asset as described here.

Still the same result.
Full log attached.
Please help

 

I use for tesing 2 devices:
Xiaomi mi5 with LineageOs firmware
Xiaomi redmi 3s with global MIUI firmware
Both having russian SIM cards.
Can it be some geo restrictions for Unity ads?

 

did you find a response to this? I am having the same issue.

 

I also tried the monitization asset and deleting the manifest file... neither worked for me either. Oddly enough, it works in the editor but not when running on Android.

 

Yes. Admob.

 

Lol... yeah... unity does not seem to care. I submitted a ticket... I'll give them a day or two and then move to admob.