This is not ever a valid option. The direct client you have outside of this platform are YOUR CLIENTS ONLY, NOT FIVERR, UPWORK, etc... Fiverr already takes 20% + fees to bring the customers to you + promote their platform, etc...
If you bring your clients here, you are opening them up to your competition as some may be tempted to browse around your category and find someone cheaper. Also, bringing them here negates any off-platform backup plan you attempt in the case that your account goes south. You should be building your direct clientele and keeping them separate from your freelance site buyers. It's the only way to build a truly sustainable business. Do not put everything into one site, platform, etc... Do not make the mistake of being 100% reliant on a third party.