fix session problem

We have a problem on our client casino online website.(it's made by wordpress) The problem is session problem. When users login and go to my page, they can't go to my page and they are logged out sometimes.(about once per 10 times) We think there is the problem that the website can't get SID sometimes. The SID is came from TAIN(online game platform) We'd like you to check and fix it. We have asked to India programmer,but they took long time.. I'd like you to fix as soon as possible. Thank you.