Hi, just a couple of checks to package versions, can you show results of following ...
# rpm -q smeserver-extrarepositories-epel smeserver-extrarepositories-centos-sclo
package smeserver-extrarepositories-epel is not installed
smeserver-extrarepositories-centos-sclo-0.1-45.noarch
# db yum_repositories show centos-sclo-centos
centos-sclo-centos=repository
BaseURL=http://vault.centos.org/7.9.2009/sclo/$basearch/sclo/
EnableGroups=no
GPGCheck=yes
GPGKey=https://www.centos.org/keys/RPM-GPG-KEY-CentOS-SIG-SCLo
MirrorList=disabled
Name=Centos-RH Software collections
Priority=10
Visible=yes
status=enabled
# db yum_repositories show centos-sclo-rh
centos-sclo-rh=repository
BaseURL=http://vault.centos.org/7.9.2009/sclo/$basearch/rh/
EnableGroups=no
GPGCheck=yes
GPGKey=https://www.centos.org/keys/RPM-GPG-KEY-CentOS-SIG-SCLo
MirrorList=disabled
Name=Centos - RH Software Collections
Priority=10
Visible=yes
status=enabled