How to solve the error that pops up when using 3g of melon

When I use 3g of melon, I sometimes get a error as shown below when I log out, what should I do?

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203 3 7 years ago

pu1. It's because the internet connection is not good. If you're using 3g or LTE, check the signal strength

2017-12-26

pu2. In that case, use the Wi-Fi connection. 3g is usually slow, so it might cut off when you listen to music

2017-12-26

pu3. Thank you!

2017-12-26