Hi @Anonymous ,
Power Automate which comes along with Office 365/MS E3 license are know as seeded license.
You can use it, but with some limitations. Like you cannot use premium connector, Api limit per flow every 5 mins will be less compare to power automate premium license and so on.
If you don't have premium license then also premium connector will be visible and you can use it for few days until your trial expires for the premium connectors , because MS wants you to use those connector and buy it from them.
Premium connector will work properly during trial period and after that your flow will start throwing error.
Your account will not be charge by MS by using those premium connector unless you go and buy from MS and add it.
So don't worry, go ahead and use those premium connector for learning purpose, but don't use it for business use unless you buy it.
Thanks
Vivek Pande
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