just had this message from ebay a final reminder to improve to your seller performance & We wanted to send you a final reminder that you’ll need to make improvements to your seller performance in global markets by 20 May to prevent further action being taken against your account.+ If your seller performance doesn’t improve, there’s a risk that the selling limits will be lowered on your account, and in some cases, you may be permanently restricted from sell...

INR cases alone would not result in the message you received from eBay. If you had "cases closed without seller resolution" because you had not refunded before the buyer was able to escalate the case then those cases would be counted. You need to go to your seller performance standards here. Then you need to click the drop-down menu shown in the below image and change the region to "Global": You will then be able to see why you are rated "below standard" in the global market...

A unpleasant message from eBay | Seller Central

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A unpleasant message from eBay | Seller Central | eBay UK