Hi and thanks!
1. Which version of Electrum are you using?
2.9.3
2. Is the wallet synchronized? (Which color is the big dot at the right corner of your wallet?)
I don't see any dot. Maybe I need a newer version of Electrum?
3. What’s your OS?
Windows 10 (Home)
4. Are you sure you pasted the right address on Coinbase? (Did you double check the address before hitting Send?)
Yes, triple checked the address
You have to use the latest version of Electrum, you can download it here:
https://electrum.org/#downloadVerify it after download. Older versions will not connect to the network.