Under site preferences - buyers blocks:

Make them look like this - the last one is quite important, especially in your case.

Have received 2 unpaid item(s) within 12 month(s)

Have a primary postage address in a location I don't post to

Have 4 policy violation report(s) within 6 month(s)

Have a Feedback score of -1 or lower

Have a Feedback score of 5 or lower and haven't gone through phone verification

Are currently winning or have bought 4 of my items in the last 10 days and have a Feedback score of 5 or lower