If you have changed your setting to "Get conversion value via Google AdWords" and the performance has declined, there might be several reasons for it.
Please check the following possible reasons:
1. Check if conversion values are deposited with your AdWords account.
2. Check if those conversion values are realistic.
3. Check if you have defined a goal in Adspert (e.g. CRR) on which the optimization is based.
If none of these cases apply to you, please contact us: support@adspert.de