Why do they tell me they can't grind my refund when it was sent electronally?

How long ago was your e-file accepted?  

You may need to be more patient with a system that is overwhelmed, and give some more time for the IRS to begin processing the millions or returns they have just begun to accept.

https://turbotax.intuit.com/tax-tools/efile-status-lookup/ 

https://ttlc.intuit.com/questions/2584108-why-is-there-no-record-of-my-return-at-where-s-my-refund-wmr?jump_to=answer_4242575

Sometimes people get confused by the “summary” given by TurboTax and use the wrong amount for the federal refund.  Make sure you are only using the federal refund amount, and not an amount that combined your federal and state refunds.  

Your federal refund amount is on line 34 of your Form 1040

https://www.irs.gov/refunds/tax-season-refund-frequently-asked-questions

The track my refund and the IRS2godo not wor

Their website may be down, you can call them or keep trying the website. 

How do I contact the Internal Revenue Service (IRS)?

Please use this link to track your refund from the IRS