There ist the same Problem with my bv9500.
Since about 3 weeks there is the new problem that the BV9500 doesn´t charge wireless. Charging with cable is no problem. I tried different wireless chargers (original Blackview charger w1 and car charger). After buying the phone in 2019 wireless charging worked without any problems. The charger is working with other phones.
When positioning the phone on the charger there is no reaction any more (constant green light on blackview charger).
By using an app to check the phones qi charge function there is the report that the phone doesn´t support wireless charging.
software number: BV_BV9500_V1.0_20190320_20190517-0041
Hello, About this problem, you've better contact our professional after-sale department.
After-sale department email: firstname.lastname@example.org