Hi,
Recently, we did not receive more threads than yours that mentioned the RWA DNS issue (maybe just not enough time), but to address this problem, you may have a look at following similar threads which discussed in March earlier with command and script.
Are the problems with remotewebaccess.com domain and Dynamic DNS service?
remotewebaccess.com down again?
Many users have report success after perform this solution : https://sbsland.me/category/computers-and-internet/troubleshooting/
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Hope this helps and please help to accept as Answer if the response is useful.
Thanks,
Jenny