お分かりにくい → elevate the verb, keep にくい
For verb+adjective compounds, sonkeigo the verb part only: 分かる → お分かりになる, then attach にくい / やすい.
Judgment paraphrased from Japan’s cultural council keigo guideline (2007) — learner explanation, not an official translation.
担当者に伺ってください — wrong direction
伺う is kenjō I — it elevates the destination of asking. Aimed at a guest, it wrongly elevates the staff-side person. Tell the guest to ask with sonkeigo: お聞きください / お尋ねください.
Judgment paraphrased from Japan’s cultural council keigo guideline (2007) — learner explanation, not an official translation.
A Business rewrite asking the other party to check with the person in charge — guest-elevating request form, not 伺ってください.
Rewritten with Tadashii Kotoba — Business style, recipient: client (live API).
御在宅する必要はありません
ご〜する builds kenjō I. Here you want to elevate the resident — use sonkeigo (なさる) or a compact 御在宅の必要は…
Judgment paraphrased from Japan’s cultural council keigo guideline (2007) — learner explanation, not an official translation.