More exact names of the sections in the settings menu

Close, but no sigar. "Перейдите в раздел Настройки > Устройства > Сканировать QR-код" would be more accurate and idiomatic. By the way, the phrase in the screenshot and the phrase for translation at the top of the page are different, hence the differences in the suggested translations.

The original translation didn't have the word "settings" in bold; translation implied "opening" the settings instead of "going to" them

In the current version, the word “Натройки” is not highlighted in any way, which does not correspond to the rest of the interfaces and violates their consistence.

Moreover, the old version of the wording is mistakenly used. On current mobile versions (both iOS and Android) "Подключить устройства" is used.

"Перейдите в" is better since it is used in other places, but such translation will ruin consistency, since it won't fit TDesktop version.

assuming that the word 'link' here serves as a connection between A and B, where A is a mobile device and B is a desktop being connected to A, 'подсоединить' applies naturally. 'устройство' in this case represents any device that can be picked from the list should there be more than one.