How can I update the feedback I have given on someone else's profile?

I patiently waited for a package of coins to arrive.
6 weeks later, I despaired of ever receiving it and left no star rating but only a statement indicating I had not received the package.
After almost 10 weeks I finally received the package.
I would like to clarify the feedback by updating my comments to indicate that the package was finally received... but I do not know how to do that.
Can anyone assist?
Thanks!

https://en.numista.com/forum/topic20951.html

That is correct. Only can be changed by Xavier ....
https://en.numista.com/forum/topic69369.html#p563388