When you can't open your DealPOS because of Looping like in this picture,
You can follow the steps below:
I. Install 1.1.1.1 Cloudflare
Step 1. Go to 1.1.1.1 / one.one.one.one , then Download Installer
Step 2. Run the Installer
Step 3. Turn On the Cloudflare WARP
II. Bypass CDN
Step 1. Open Incognito Window (Private Browsing), CTRL + SHIFT + N
Step 2. Go to 'cdn.jsdelivr.net' from Incognito (Private Browsing) then Click 'Advanced'