This placement stopped receiving impressions in the last 3 days

Hi, I have an app with Unity ads that were displaying correctly, but a few days ago the ads stopped showing. When I checked the ad placements, a yellow dot appeared next to the ad with the following note: This placement has stopped receiving impressions in the last 3 days, although I have a similar app with the same settings and the ads are showing normally, is there an explanation for this issue?
Note: The app is working with users.
In android studio log shows this error:

E/UnityAds: com.unity3d.services.core.api.Sdk.logError() (line:72) :: Game Configuration Request Failed: {"message":"FAILED_WITH_ERROR_RESPONSE","nativeRequest":{"method":0,"url":"https://publisher-config.unityads.unity3d.com/games/5634754/configuration?deviceMake=Google&screenDensity=420&screenSize=268435810&idfi=00fe5c90-d82f-46f4-9ec9-74bc96415947&advertisingTrackingId=00000000-0000-0000-0000-000000000000&limitAdTracking=false&installationId=00fe5c90-d82f-46f4-9ec9-74bc96415947&connectionType=wifi&screenHeight=2337&screenWidth=1080&usePerPlacementLoad=false&bundleId=com.hdwallpapers.survivefreefire&encrypted=false&rooted=false&platform=android&sdkVersion=3700&osVersion=13&deviceModel=sdk_gphone_x86_64&language=en_US&test=true&first=false&userLevelFlagDetected=false&store=UJbrpqVPPq4mggZiEk6WuAZZNhQLN8f4Pma6Z8Sgt9CwxUy-XVTzqQ8FsVqTb8GIXDInViHeSIdJ1U0ZNy7viLU68iZU-s8YzopmO0D--vornbMlm5n8YMIWEifpSjRlpIyY8t3lM2umRLk6q1gr4pyfaDNJgC8bYU35NnItPDaTyXOPDMSOti-hROEeCJ87Lk4z8TEh4mBPdkW-euHXysypJ3L0XwyDksB1rEVOhRbVw0w2YaxxZQieB1Mlzi9ZvTQz7acpKAm7F50t8_tsDGzY9ETNuhZQLEwGmoUrv4mV4yqxmirL7kgRmO1JgMB4zz4Zyy0lTgCLcX9jrAvIJine6cBaTybBYjdznpM4kWBmmjsaas4-rgH7Of0739uV7bkdSYqtqurFQic8UUXKsj5udhEpxZV9WlHHSu6nX1ytbwrRgLWyUm00GjWCJikj2njpCmXZku-eLSQNgembEOe62wA9X0o0nuAH7M9VBErTdcRo-4XYCKpPRJgy6odAciWylhRS1gc7mi54jhUVZkMYJbylerka","headers":[],"retryCount":0,"options":{"retries":2,"retryDelay":10000,"followRedirects":false,"retryWithConnectionEvents":true}},"nativeResponse":{"url":"https://publisher-config.unityads.unity3d.com/games/5634754/configuration?deviceMake=Google&screenDensity=420&screenSize=268435810&idfi=00fe5c90-d82f-46f4-9ec9-74bc96415947&advertisingTrackingId=00000000-0000-0000-0000-000000000000&limitAdTracking=false&installationId=00fe5c90-d82f-46f4-9ec9-74bc96415947&connectionType=wifi&screenHeight=2337&screenWidth=1080&usePerPlacementLoad=false&bundleId=com.hdwallpapers.survivefreefire&encrypted=false&rooted=false&platform=android&sdkVersion=3700&osVersion=13&deviceModel=sdk_gphone_x86_64&language=en_US&test=true&first=false&userLevelFlagDetected=false&store=UJbrpqVPPq4mggZiEk6WuAZZNhQLN8f4Pma6Z8Sgt9CwxUy-XVTzqQ8FsVqTb8GIXDInViHeSIdJ1U0ZNy7viLU68iZU-s8YzopmO0D--vornbMlm5n8YMIWEifpSjRlpIyY8t3lM2umRLk6q1gr4pyfaDNJgC8bYU35NnItPDaTyXOPDMSOti-hROEeCJ87Lk4z8TEh4mBPdkW-euHXysypJ3L0XwyDksB1rEVOhRbVw0w2YaxxZQieB1Mlzi9ZvTQz7acpKAm7F50t8_tsDGzY9ETNuhZQLEwGmoUrv4mV4yqxmirL7kgRmO1JgMB4zz4Zyy0lTgCLcX9jrAvIJine6cBaTybBYjdznpM4kWBmmjsaas4-rgH7Of0739uV7bkdSYqtqurFQic8UUXKsj5udhEpxZV9WlHHSu6nX1ytbwrRgLWyUm00GjWCJikj2njpCmXZku-eLSQNgembEOe62wA9X0o0nuAH7M9VBErTdcRo-4XYCKpPRJgy6odAciWylhRS1gc7mi54jhUVZkMYJbylerka","response":"{\"error\":\"request conflicts with the configuration - mismatched platform\"}\n","responseCode":409,"headers":[["Transfer-Encoding","chunked"],["Alt-Svc","h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000"],["Access-Control-Allow-Origin","*"],["X-Android-Received-Millis","1731168192858"],["Date","Sat, 09 Nov 2024 16:03:11 GMT"],["X-Origlength","75"],["Via","1.1 google"],["X-Android-Selected-Protocol","http/1.1"],["X-Service","ads-sdk-configuration"],["X-Android-Response-Source","NETWORK 409"],["Vary","Accept-Encoding"],["X-Android-Sent-Millis","1731168192661"],["Content-Type","application/json"]]}}
E/UnityAds: com.unity3d.services.core.configuration.InitializeThread$InitializeStateCreate.execute() (line:456) :: Unity Ads SDK fail to initialize due to configuration error

Hello.

I’m having the same problem. I’m seeing this message on the Unity Cloud website, and the ads no longer load.

Do you know why this message appears and how to fix it?