Updated FAQ

FAQ.md

@@ -3699,13 +3699,14 @@ because this could result in grouping unrelated messages and would be at the exp
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 If FairEmail cannot connect to an email server to synchronize messages,
-for example if the internet connection is bad or a firewall or a VPN is blocking the connection,
+for example, if the internet connection is bad or a firewall or a VPN is blocking or aborting the connection,
 FairEmail will retry one time after waiting 8 seconds while keeping the device awake (=use battery power).
 If this fails, FairEmail will schedule an alarm to retry after 5, 15, 30 and eventually every 60 minutes and let the device sleep (=no battery usage).
 
 By temporarily enabling debug mode in the miscellaneous settings, you can disable this logarithmic back-off scheme (since version 1.1855).
 This will result in using a linear back-off scheme, which means that after each successive failure the waiting time will be
 increased by 1 minute the first 5 minutes and thereafter by 5 minutes up to 60 minutes.
+This might increase the battery usage significantly!
 
 Note that [Android doze mode](https://developer.android.com/training/monitoring-device-state/doze-standby)
 does not allow to wake the device earlier than after 15 minutes when doze mode is active.