There is no compensation. Not only should it be self-evident that the C-19 situation is an "extraordinary circumstance" but to the extent that it isn't self-evident, the EC has issued Guidance making this clear.
As to the ticket itself, EC 261/2004 would require a reimbursement (refund) if you wish one.
Your post is unclear as you mention not being "offered" a refund. The important question is whether you asked for and were denied a refund.
If you were denied a refund, initiate a chargeback with your credit card issuer (bank). If you have not asked for a refund, send a note to EI requesting a refund to your original form of payment. EI has seven days to initiate the refund and you may initiate a chargeback on the 8th day (or sooner if for some reason EI denied the refund).