Fmod notarization error, signature invalid

We’re trying to notarize our game made, but we have an error with fmod library

We’re using Unity 2019.3 and following this guide:

But on the notarization result we got “The binary is not signed.” and “The signature does not include a secure timestamp.” on fmod libraries

If we try to sign fmodstudio inside Plugins/fmodstudio.bundle/Contents/MacOS/ we got
“The signature of the binary is invalid.”

Do we need a signed version of the library, or can we solve this in our notarization process?