Hazel replied:

Hello. "Foul play" error is actually an anti-cheat system that disconnects hacker out of the battle, but it sometimes, it disconnects players because of bad internet connection. But, don't worry, developers are currently trying to improve it. If you want to help them, please answer to the questions mentioned here. If you want your crystals back, you need to send an email to help desk at help@tankionline.com with the evidence (picture/video taken in the battle before disconnection). If you don't have such evidence, your crystals can't be returned, sorry. More information: ~How to get your crystals back if you were kicked from the battle due to server's fault

Don't worry, players can't enter to the test server even if they know the invite code, because they also need the password of the player that is invited to test server. Also, I have already PMd and told him about it.

Hello. Please watch this video, it explains how to configure Tank Viewer:

Hello. Please check this topic: Stuff missing from Settings - how to fix

Bye, man, I'm really sorry because you're leaving...please don't forget us...

:)

Create a new email account and use it to contact them. Good luck :)

It's not only you, many players have lag issues. But, don't worry, developers are currently working on it.

Hello, new guy! Please stick to the most important not written forum rule: have fun!

As usual, test server doesn't load -_-

Please post your computer specs and internet connection speed, it will help us to find out what causes it.

Hello. You need to contact to your email provider's help support to recover your password. If they say password recovery is impossible, contact to Tanki help at help@tankionline.com and explain the situation. They will surely help you.

Try using another browser.

Click on "Create" button to create a battle and then try again.

Try entering the game through this site.

Try using Google Chrome browser.

Please check this topic: High PING

Name it joker

Hello. Please try this: http://en.tankiforum.com/index.php?showtopic=194745

You can't get an invite code, only testers have them. If you want to test the new updates, wait for the testers to open the test server. Stay tunes here, when they decide to open them a new topic will be made there to inform people.

Some kits have items that are not available at your rank.

Try this: How to reduce lags

Or, you can use Windows Update to update it automatically. To do it, follow this guide:

He's right, it happens to me too.