It could be that you have a filter applied (albeit out of sight) on your matching grid. Try right clicking and selecting ‘Clear Filters’ and then they should be displayed:

Every time you run a match, the system asks if you would like it to 'Clear Filters on running match' - ticking this will ensure that you always see your results:

Make sure the applicant has a valid email address in the E-Mail field on the Details tab in their record, and also that the ‘Send E-Mails’ tick box is ticked:

It is the “Match This Property” tick box on the Details tab of a property record that determines whether a property gets matched. So if you have marked a property as ‘Sold STC’ but have left it with “Match This Property” ticked, it will still match. You can un-tick this box on the Details tab of a property’s record, or when you make the status changes through your offer - if progressing your offers correctly, the system will ask you whether you would like to continue matching the property or not when you mark the offer as accepted.
This is the box on the Details tab of the property record:

For information on making the status change as you progress your offer, see the Accepting an Offer section.
The system doesn't match against inactive applicants, so the results you’re seeing are from before the applicant was marked as inactive and they simply weren't processed or rejected. If you clear these results by going into the applicant’s outstanding matches and removing them, then you should find that no further matches are generated for the applicant:

1. Right click and 'Exclude All'. This will un-tick all of the results on the left hand side.
2. Right click again and select 'Reject Excluded'.
To review all outstanding matches in the system, hover the cursor over 'Applicants' (on the top menu bar) then select 'Outstanding Matches' – it’s a good idea to do this regularly as its very likely that some if not all of these matches were run some time ago, and therefore that some of the applicants have since become 'inactive on your system:
Also, make sure that when you’ve done a match you send it, either using the 'send email', 'send sms' or 'letters/lists' option, and that you ensure it is marked as complete and excluded upon completion from the match grid. The best way to do this differs slightly depending on how you choose to send your match results - see the Processing a Batch Match section for examples of every method.