Possibly lost/stolen BTC. Not sure

I’m still learning and not fully sure. I use coinbase and they aren’t allowing any transactions today for an update. Yesterday I transferred a small amount to my Ellipal wallet and it never arrived. On coinbase in the “sent to” section it shows the correct address for my ellipal wallet and also it says completed on coinbase but never showed up to ellipal.

Can this be a delay since coinbase is doing an update?

How can i tell if someone took my btc. My main concern is how to get the rest of my stuff off of coinbase without an issue if it’s beyond an update issue/delay.

I will wait a day or two in hopes that it’s just a delay BUT would love ideas on how to get btc off the exchange without someone taking it - if that is the issue… Again I hope it’s just a delay..

Thanks