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. Learn more about the goals you can set in Adspert.
If none of these cases apply to you, please contact us: email@example.com