If your Clover device tampers, you will be still able to accept the majority EMV payments since most transactions are chip + signature or have a signature option. You will not be able to accept any payment type that requires a cardholder to enter a PIN, such as PIN debit and EBT.
You do not have to continue taking payments on tampered devices. If you prefer to wait for a replacement to arrive, you can do so. However, if the you suspect that your Clover device has been physically tampered or disassembled, you should not use it to take payments.
Reference Site: https://help.clover.com/faq/if-my-device-is-tampered-can-i-still-take-transactions/