They were not promoted last season because they did not meet FAW tier 1 guidelines.
Promoted from Welsh Football League Division One Relegated from Cymru Premier
Promoted to Cymru Premier Relegated to Ardal SW
Source: footballgroundmap.com Cymru South Ground Information The Professional Registration Periods for the 2020–21 season were as follows: The first period was to open on 27 July 2020 and was to close at midnight on 16 October 2020.
[2] The FAW eventually cancelled the 2020–21 season on 18 March 2021 because Cymru North and South did not have their Elite Status designation reinstated by the National Sport Group.