Yes, there are the following limitations in the trial version -
- You can only upload up to 5 files at a time.
- You cannot upload a file size greater than 10MB.
P.S. Discover Azure Integration, the easy way to upload files from any Salesforce record to Azure. Find it on AppExchange: https://appexchange.salesforce.com/appxListingDetail?listingId=c9e71bd6-5bab-4182-a461-b82d4f971183