Confirming or rejecting Record Matches is a paid feature that either requires a SuperSearch data subscription or credits.
Confirming a Record Match costs the same as acquiring the record. Indeed, after you confirm the Record Match you will have access to the full record, including the ability to download the record if relevant.
Confirming and rejecting records from free collections is free!
If you have a credits package with valid, unexpired credits you can reject Record Matches for free.