Necrobot v0.1.0 - 0.8.6 will soft ban your account at EVERY pokestop.
Wait for a new release of necrobot v0.8.7 that bypasses the new softban. There is no way to change your config to make this work, maybe donating to necrobot?
but wait for a new release! thanks for reading, to many soft bans will be a red flag to your account even with a vpn.
Check for updates @ Releases * NECROBOTIO/NecroBot * GitHub