Just re-indexing  with 10.6.3 will not ensure you are on the correct chain. in your conf file set listen=0, remove all your addnode entries, then add connect entries to all peers that have a blockheight above 7091226
 ie:
connect=89.212.249.7:11973
connect=70.81.219.188:11973
connect=2a01:4f8:13b:7a3::901:11973
connect=123.243.123.106:11973
connect=101.187.42.235:11973
connect=58.96.77.27:11973

Once you have synced to 7091226 or above you can restart with listen=1 and replace addnode entries