No, it cannot. When you know TL-SF1005D is unmanaged switch which mean you cannot operate it any more.

No way to do that. It just a easy smart switch that allow all VLAN to access its web page. Management switch could do that.

You could contact the TP-Link support for help first i think. But i need to mention that there is less people make bandwidth control in easy smart switch, it is strange also.

It is the issue coming from power adapter. You could use ask TP-Link support for the new power adapter then it could work. I meet the same issue and solve it by changing new adapter. So maybe you...

You could check whether if it have DHCP Snooping function in Network Security option. If you could find that, DHCP Snooping is the same as DHCP Filtering. If not, it may deleted.

I think you could open the configuration and edit the model name to the name you want. Then you could try to restore.