When I insert the Key number and click "submit" it just goes back to the page asking the Key again.
I tried deleting the License folder from the registry and it didn't help.
Tried deleting everything and reinstalling it - didn't help.
This may apply: "Older versions of Vegas Pro than 14.0 are licensed under a system (as previously used by Sony) which permits use on multiple computers by one user; after an unspecified number of installations on different or updated PCs you may need to contact support to reset your "installation count".
See here point 6 or try VEGAS Support (advice here).
Some versions of Vegas MS13 are actually Magix rebranded versions. Mine, purchased in December 2016, is.
@Guy-Tichon Where did you purchase yours from?
Mine suppose to be Vegas.
Getting support from this company is impossible....
Where is the link directly to a person I can talk to.
There isn't such a link. Try the Online live chat I gave a link to above. The VMSP 13 serial number starts with 1ST-. (see your MAGIX account > My products).
(I gather you already tried the solution here.)
@EricLNZ please see my assumption re MAGIX rebranded versions here. Is your version a P3- ? (It should not be.)
@Guy-Tichon Which Windows version are you using?
VMSP13 is "1ST". "P3" came in with VMS14.
So resetting the installation count may be needed as I suggested. Rebranding would not matter.