Where are the credit limit review settings?

Open this screen in Saral/accounts/settings?tab=Credit%20Nurture

Accounts → Settings → Credit Nurture: the monthly ask (off by default), which mailbox it is sent from (a no-reply address by default), reminder days (4 and 10), and the review tiers — Key from £20,000 average monthly spend or the top 20 suppliers by 12-month spend, Growing from £5,000 or 1.5 × the 12-month average, Steady from £500, otherwise Dormant. Draft review mails nightly is off by default.

Not what you needed? Inside Saral, ask Kuku (Alt+K) — if it cannot answer, “Ask a human” sends the question to Saral support with the chat attached.