TimeTrex itself would give you an error if the message is too short or too long, if its being cut off, either you using strange characters (which doesn't appear to be the case) or there is a setting with your installation or web browser that is causing the problem.
I can view the whole message and it works fine when i try sending a test message in your demo site.
Also, when someone sends a message or missed a punch, it notifies me through my email. Thats a good thing but when i click the link, it goes to http://localhost/time/interface/
Maybe this is related.
Please help which file should i look at and hopefully we can identify what causes the issue.
Thank you very much
It sounds like its a problem with the PHP installation on your server, based on your past message regarding installation issues and using a shared hosting provider, that is likely the cause and just one of the reasons why we don't support shared hosting environments.