Excel export from WEBDBGRID

How to export to excel from a WebDBGrid

You can use the TWebXLSX component for this.
https://download.tmssoftware.com/doc/tmswebcore/components/twebxlsx/

But when Asigning My WebDBGrid it says
The assigned control is not a TWebStringGrid OR a TWebTableControl

I tried to typecast but that also did not work

We've seen this and you're correct about this.
We applied an improvement so this exception will no longer be raised when a TWebDBGrid is assigned.
The next update will address this.

Any time frame for next update

Either later this week or next week.

Is there an update now

Last release is v2.1.1.0 from Apr 16, 2022.
Did you try this release?