Don't cancel it, a stretched pending period is often waiting for exactly that, and check whether you can lock reverse withdrawals in your settings. Read their T&Cs for the stated processing time and any withdrawal cap (a 4k win can be paid in instalments), then ask support by email for the status and a date and screenshot everything. If they go past their own timeframe, complain to the licensing body in their footer or file one here on AskGamblers. Ten days on a verified account is long, but not proof they won't pay.