Welcome to the PayPal Community! This definitely sounds like a concerning situation. Are you still seeing the option to pay with PayPal Credit on other websites? If so, this sounds like it may be an issue on the eBay side. If you're not seeing PayPal Credit on your account at PayPal.com either, I would recommend that you reach out to PayPal Credit to make sure your account is in good standing.
I hope this information helps!
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