I have tried so many ways but it does not work.
I have also been doing the proper steps: Settings→ Files→ Upload files and still does not allow me.
Please assist me ASAP.
The reason why you are seeing this error is that your store appears to be on a trial plan. You do not have the ability to upload any video content to your products unless you are on a paid plan. Once you have subscribed to a plan you will have access to upload .mp4 files.
On a trial plan, you can upload only the following file formats:
JS
CSS
GIF
JPEG
PNG
JSON
CSV
PDF
WebP
HEIC
I wanted to ask if you have given any thought as to which plan you will choose when you are ready to launch and start making sales? We have a few options available but I always encourage merchants who are new to the e-commerce world to choose the Basic Plan at $29 USD per month. Just something to think about!
Choosing an annual billing period can also save you a fair amount on subscription costs. Opting to receive your invoice once per year means you’d see a 10% subscription discount, every two years is 20% off, and three years is 25% off! On top of that, any annual plan is also eligible for a free Carrier Calculated Shipping upgrade.
You do not have the ability to upload any video content to your products unless you are on a paid plan. Once you have subscribed to a plan you will have access to upload .mp4 files.