At once I apologize for the English language.

I recently received a license that caused the server to shut down every 2 hours due to the fact that the license check failed.
Could not connect to accounting server after multiple attempts, shutting down server
Magazines that have only one problem.

2018-01-31 14:21:25.152109|INFO |DatabaseQuery | |checking database integrity (may take a while)
2018-01-31 14:21:25.344497|ERROR | | |read invalid packet size -1258300238
2018-01-31 14:21:25.345942|ERROR |Accounting | |Unable to connect to accounting server
2018-01-31 14:21:25.345965|INFO |Accounting | |Licensing Information
2018-01-31 14:21:25.345975|INFO |Accounting | |type : Non-profit
2018-01-31 14:21:25.345988|INFO |Accounting | |starting date : Tue Jan 30 00:00:00 2018
2018-01-31 14:21:25.345997|INFO |Accounting | |ending date : Mon Jul 30 00:00:00 2018
2018-01-31 14:21:25.346004|INFO |Accounting | |max virtualservers: 2
2018-01-31 14:21:25.346011|INFO |Accounting | |max slots : 512
2018-01-31 14:21:26.519743|INFO | | |Puzzle precompute time: 1157
2018-01-31 14:21:26.520110|INFO |FileManager | |listening on 0.0.0.0:30033, :::30033
2018-01-31 14:21:26.612544|INFO |CIDRManager | |updated query_ip_whitelist ips: 127.0.0.1/32, ::1/128,
2018-01-31 14:21:26.612750|INFO |Query | |listening on 0.0.0.0:10011, :::10011
2018-01-31 14:21:26.794567|ERROR | | |read invalid packet size 1366190822
2018-01-31 14:21:26.795388|INFO | | |Increased protection level to: 1
2018-01-31 14:21:27.338774|INFO | | |Increased protection level to: 2
2018-01-31 16:21:30.287128|ERROR | | |read invalid packet size 299104257
2018-01-31 16:21:30.287311|ERROR |Accounting | |Could not connect to accounting server after multiple attempts, shutting down server
2018-01-31 16:21:31.951357|INFO | | |Increased protection level to: 1
I went for advice to open ports, they were not closed by the way, but still I opened them through iptables
# Completed on Wed Jan 31 15:46:18 2018
# Generated by iptables-save v1.4.21 on Wed Jan 31 15:46:18 2018
*filter
:INPUT ACCEPT [3208504:407349254]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [3996817:1473841675]
-A INPUT -p tcp -m tcp --dport 2008 -j ACCEPT
-A OUTPUT -p tcp -m tcp --dport 2008 -j ACCEPT
-A OUTPUT -s 128.65.210.118/32 -p tcp -m tcp --dport 2008 -j ACCEPT
-A OUTPUT -s 194.97.114.3/32 -p udp -m udp --dport 2010 -j ACCEPT
COMMIT
# Completed on Wed Jan 31 15:46:18 2018
# Generated by iptables-save v1.4.21 on Wed Jan 31 15:46:18 2018
*mangle
:PREROUTING ACCEPT [7948796082:900539968408]
:INPUT ACCEPT [7948795854:900539943355]
:FORWARD ACCEPT [218:23935]
:OUTPUT ACCEPT [11012942476:2314656101306]
:POSTROUTING ACCEPT [11012942718:2314656126740]
COMMIT
# Completed on Wed Jan 31 15:46:18 2018

Then I checked the availability of the site
[email protected]:/home/nofear/ts3server# traceroute -T -p 2008 accounting.teamspeak.com
traceroute to accounting.teamspeak.com (128.65.210.118), 30 hops max, 60 byte packets
1 Host-37-230-210-3.rs-media.ru (37.230.210.3) 0.017 ms 0.003 ms 0.002 ms
2 Host-46-174-51-1.rs-media.ru (46.174.51.1) 0.310 ms 0.260 ms 0.366 ms
3 85.26.239.245 (85.26.239.245) 1.446 ms 1.530 ms 1.440 ms
4 83.169.204.1 (83.169.204.1) 45.275 ms 45.223 ms 83.169.204.5 (83.169.204.5) 45.123 ms
5 10.222.36.134 (10.222.36.134) 54.096 ms 54.212 ms 10.222.36.130 (10.222.36.130) 45.203 ms
6 83.169.204.50 (83.169.204.50) 44.650 ms 83.169.204.58 (83.169.204.58) 44.604 ms 83.169.204.50 (83.169.204.50) 44.624 ms
7 decix2.link11.de (80.81.193.218) 44.597 ms decix.link11.de (80.81.192.218) 40.562 ms decix2.link11.de (80.81.193.218) 40.480 ms
8 10.254.104.1 (10.254.104.1) 40.738 ms 10.254.103.1 (10.254.103.1) 40.516 ms 40.632 ms
9 128.65.210.118 (128.65.210.118) 40.409 ms 40.860 ms 40.397 ms
So what could I miss? I now ask for support to disable anti ddos, can it close the connection