[Can I log in to Fiverr on my new device?]

Hey, greetings to all the forum members,

I have a question about Fiverr log-in. I'm using my Fiverr on my old laptop. Last 1 month ago, I got a laptop as a gift. I don't know with using this laptop is anyone using their Fiverr or not (if they have) on this device N.B: The Windows Assistant Application says it's 3 years old that's why I am concerned about it. Can I log in to Fiverr on my new device (which I have got a gift)?

And is there any problem using Fiverr on several devices like 2/3 laptops, and 2/3 phones together?