K Sumontra - Sorry, 1 more time... I did find a link on the intranet, and I took and passed a test, got a certificate. But still your link did not work -- So I pushed the button on the initial Thai screen, and it brought me to the screen you showed, with the option to change it to English. Unfortunately, the certificate still showed expired -- So I took the test again -- the test was a little different, but finally I hope my completion is now registered.
In any case, the initial issue was that a welcome screen appeared in Thai with no option to change the language.
For me, it should be resolved, but in case other users may have some issue, this is why I have given you the details.