docs(GITBOOK#138): Changing 15-day to 30-day free trial

docs/installation/README.md

@@ -8,7 +8,7 @@ icon: desktop-arrow-down
 
 Installing NoPorts consists of the following steps:
 
-1. [Obtain your NoPorts license](./#id-1.-obtain-your-license) from [noports.com](https://my.noports.com/no-ports-invite/30dayfreetrial)\
+1. [Obtain your NoPorts license](./#id-1.-obtain-your-license) from [noports.com](https://my.noports.com/no-ports-invite/14dayfreetrial)\
    &#xNAN;_You can start with a 30-day evaluation license, no credit-card required_
 2. [Install NoPorts](./#id-2.-install-noports) software on your devices
    1. Install the NoPorts client\
@@ -31,9 +31,8 @@ During registration, you will receive two atSigns, these are the identifiers tha
 
 There are two options for registration:
 
-1. [Register for the 14-day evaluation](https://my.noports.com/no-ports-invite/14dayfreetrial)
-2. Or for additional licenses, use [the main portal](https://my.noports.com/login)\
-   after signing in, click "Buy atSigns"
+1. [Sign up for the 30-day evaluation](https://my.noports.com/no-ports-invite/30dayfreetrial).
+2. Select from one of our [paid packages](https://my.noports.com/no-ports-plans).
 
 ## 2. Install the NoPorts client
 
@@ -64,7 +63,7 @@ This version of NoPorts supports all single-socket[^1] TCP applications, such as
 * [File sharing with SMB](#user-content-fn-2)[^2]
 * [Many more use-cases](#user-content-fn-3)[^3]
 
-The application is currently in alpha, if you would like early access, please reach out to [[email protected]](mailto:[email protected]).
+The application is currently in alpha. If you would like early access, please reach out to [[email protected]](mailto:[email protected]).
 
 #### **SSH NoPorts**