Editing purchased assets?

I have a question rather legal than technical.
I (who belongs to a company, so also our company) purchased an assets, which was good so long.
And now, I have some problem with a part of it.
More precisely, since the library uses some codes that require telephone permission, so my game now also requires telephone permission.
And I don’t want my game to permission unnecessary permissions.
It seems that I can modify that script to avoid using telephone permission, but is it OK to modify script of assets that I have purchased?

Seems my words are bit mess, so simply

Can i modify script of asset that i purchase?

Thanks!

This answer is YES. You could modify the asset if it is purchased from Unity Asset Store.

Reference (Asset Store Terms of Service and EULA)

  • in 2.2.1 and 2.2.2:
    END-USERS may modify Assets
  • in 6.1:
    Except for Services SDKs, END USER may modify Assets.