Fire Capes are not infernal services, so sharing account for them doesn’t warrant ban.
Account sharing is allowed by Jagex’s rules, there’s no point to perform the service remotely on regular accounts.
If your account has Player Moderator status this kind of account is the only one that is checked for third-party logins. For PMods we can do an exception and perform the service remotely.
If you really want an remote service we’ll charge for it +200-250% extra fee depending on your location. (200% EU, 250% USA, Australia & New Zeland). This option is not possible for Prayerless builds as tick eating is impossible with extra delay.