Installing Email 2FA is very simple. The following steps will guide you through the process:

1 - Upload the entire folder to your website - if you experience problems, try uploading in binary mode. However, do not upload the “upload” folder, just the files inside of it!
2 - Login to admin area go to Configuration > System Settings > ADDON MODULES
3 - In the Addons page you will see the Email 2FA click activate then click configure to see the options
4 - Check Full Administrator box in the Access Control then click save changes
5 - To set the module to go to Addons > Email 2FA
6 - To enable Two-factor Authentication then please go to Setup -> Staff Management -> Two-Factor Authentication on the navigation bar at the top of WHMCS
7 - Scroll down to 'Email Two-Factor Authentication' and click the 'Activate' button
8 - Tick the 'Enable for clients' if you want clients to be able to use this
9 - Tick the 'Enable for staff' if you want staff to be able to use this and enable Force Administrator Users to enable Two Factor Authentication.
10 - Click the 'Save Changes' Button
11- You can edit the email template Go to Setup > Email Templates and they you find 2 templates
WS Client Two-Factor Authentication
WS Admin Two-Factor Authentication

This on the top 10 WS modules of March 2021

1) SMS Manager
2) Product Limiter
3) Email Verification Pro
4) Agree Terms
5) BTCPay Payment Gateway
6) Services Fee
7) Affiliates Plus
8) Products/Addons Images
9) Server Monitoring
10) Client Notification

https://www.whmcsservices.com/top10.php

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For some reason, the output doesn't match what I have typed in the refer a friend page.

While I used a bullet list the output is just plain text.

ANS Problem is related to how the theme did

here is solution:

find this <ul> and replace with this <ul class="checklist">

going to be like this image

We would like to thank our members, whose efforts over the years have made this translation what it is.

macedonian: Ljubomir Milev
German: Stefan Popescu
Persian: Sadra Adeli
Farsi: Sadra Adeli

An issue has been identified in the 1.1.4 release - published on 2/24/2021Monitor status missing

This hotfix applies only to 1.1.4

Resolution

We are releasing a hot-fix patch that introduces logic to handle this scenario.

Applying the HotFix

To apply the fix, download the zip file from the link above. Extract the contents and uploaded to modules\addons\UptimeRobot

This on the top 10 WS modules of February 2021

1) Agree Terms
2) Email Verification Pro
3) Client Notifications
4) Product Limiter
5) Support Pin
6) SMS Manager
7) Products/Addons Image
8) GDPR Tools
9) UptimeRobot Status
10) Affiliates Plus

https://www.whmcsservices.com/top10.php

This what you need to add on the button

Your_WHMCS/affiliates.php
You can link to active page with this URL:
Your_WHMCS/affiliates.php?requestactivenow=Any_Random_Number
This will open ticket for activation

An issue has been identified in the 2.1.2 release - published on 2 February 2021, remove PayPal ID field

This hotfix applies only to 2.1.2

Resolution

We are releasing a hot-fix patch that introduces logic to handle this scenario.

Applying the HotFix

To apply the fix, download the zip file from the link above. Extract the contents and uploaded to modules\addons\AffiliatesPlus

Installing UptimeRobot Status is very simple. The following steps will guide you through the process:

1. Upload the entire files/folder to your WHMCS root directory - if you experience problems, try uploading in binary mode. However, do not upload the “upload” folder, just the files inside of it!
2 - Change your_template to the directory name of your WHMCS template (found under whmcs_path/templates/), e.g orbit, webhoster, Clouder etc.
3 - Login to admin area go to Configuration > System Settings > ADDON MODULES
4 - In the addon modules page you will see the UptimeRobot Status click activate then click configure to see the UptimeRobot Status options
5 - Check Full Administrator box in the Access Control then click save changes
6 - To set the module to go to Addons > UptimeRobot Status
7 - Client can see the status at whmcsurl.com/index.php?m=UptimeRobot