I think PLESK did not design this product correctly.
Plesk hasn't done a good job setting up this kind of server.
The product can go up to m5a.large at most.
So 2 Vcpu 4 Ram.
The problem starts as soon as you get a license and want to use the same server.
2 cpu and 4 ram working max.
In the m5a.large instance type issue.
It is not possible to host even 1 site.
I think PLESK did not design this product correctly.
Did you find a solution if you byol? Same problem