Can't Add Additional TXT records

I need to add a mail._domainkey and _dmarc TXT records to my DNS

Every time I try to do this I get a: "It appears that our partners are experiencing some technical difficulties, so we were unable to submit your A Record, CNAME, MX and TXT Record changes at this time. Please ensure that the records you are attempting to submit are valid and try again later." 

It also shows a highlighted box where I've entered the name of the TXT records.

I am trying to set up Brevo as a mailing service to send form submissions through. I have done this numerous times on countless other hosting platforms. It is a very simple process. 

I have never had so many problems with simple tasks with any other DNS provider. I am extremely disappointed with Homestead, after they finally resolved the "try creating a new website with the website builder to reset the domain" error that was preventing customers from even viewing DNS records, I still cannot accomplish adding two simple records. This is incredibly frustrating. Please advise.