In order to start a ride, please be sure to disable battery optimization.
If after pressing agree, you do not see the allRiDi driver app, click on "apps not optimized" and switch to all apps. From there, search for the allRiDi driver app and disable battery optimization.
The ride will now start. You can also find step by step videos here:
Samsung devices on Android 10 (S8/S9/S10 etc)
Samsung devices not on Android 10 (S7/J2/J3 etc)
Samsung A series (A10/A20/A50 etc)
Huawei devices (P9/P30 etc)