If yes, do we need to update the address?

If so, what's the best way?

I notice the past 5 or so months, my PPD results are very low.

If yes, do we need to update the address?

If so, what's the best way?

I notice the past 5 or so months, my PPD results are very low.

WCG is not fully back yet. Small test batches are sent out, but most volunteers will probably not get any work.
It will probably take weeks before we can consider WCG as being fully back.
There's still tons of issues that they have to fix before WCG goes full bore.

Regarding the address, If you see a message from WCG in the BOINC event log that says:
"This project is using an old URL. When convenient, remove the project, then add https://master.worldcommunitygrid.org/" IGNORE that message, and do NOT do what it says.
The problem is with WCG, and not with your BOINC clients settings. It's up to the WCG admins to fix the problem, so the erroneous message goes away.

If yes, do we need to update the address?

If so, what's the best way?

I notice the past 5 or so months, my PPD results are very low.

WCG is not fully back yet. Small test batches are sent out, but most volunteers will probably not get any work.
It will probably take weeks before we can consider WCG as being fully back.
There's still tons of issues that they have to fix before WCG goes full bore.

Regarding the address, If you see a message from WCG in the BOINC event log that says:
"This project is using an old URL. When convenient, remove the project, then add https://master.worldcommunitygrid.org/" IGNORE that message, and do NOT do what it says.
The problem is with WCG, and not with your BOINC clients settings. It's up to the WCG admins to fix the problem, so the erroneous message goes away.

Thank you.
It would save me a lot of time, since I'm still running about 48 CPU units, most of them doing Universe@home right now.
And whatever other work there's available.
Anything but Qchempedia, which apparently needs better hardware.