There may be several reasons:
1, the Internet speed is slow, the functions in the game do not load normally, re-enter the store to recharge the try;
2, the browser kernel has a problem, or other security software locked the browser, you can use the TGP platform to fix a try. In fact, LOL is to support the game recharge, such as the prop mall can buy things directly, the official website can also recharge points.