problem with Advanced Privacy, if you disconnect about 6-8 times and connect to the VPN, then after the last connection, Advanced Privacy does not turn on the VPN. accordingly does not protect the user /e/ OS. To fix the problem, you need to turn your phone off and on.
if this is DoS protection, then at least indicate it with text or a small window that shows the timeout until the next connection.
Issue on version 1.19.1 and below (not tested on 1.20)