The frequency changing relay is out of order. It can not change frequencies.

频率转换继电器故障，不能转换频率。

youdao

These devices should just relay data rather than changing it and the argument against having intermediary nodes doing things like modifying web pages is that this can, at the least, introduce performance and reliability problems.

FORBES: Cox Inserts User Notification Popups By Hijacking Web Pages, Doesn't Tell Support, Invites Problems