Online booking of buses and trains in Malaysia

They can be quite problematic. A saved id couldn't be retrieved with easybook. Issues with payment when I tried to use busonline . They do work sometimes but the system still is not very efficient.

Cabin luggage issues

Isn't it confusing? Some airlines put it as 55 x 35 x 20 cm as the flight bunch that I am taking from KL to Istanbul (Air Asia, India Air, Oman Air) while for Ryan Air priority 55 x 40 x 20 (10 kg) + 35 x 20 x 20 (laptop bag). How do we buy a cabin bag nowadays? Go for the smaller dimensions always?