Gamertag has numbers instead of using regular suffix on all ends

That's actually normal depending on what you're looking at. Not everything has been updated for the suffix so for instance if someone is looking for you in their friends list or searching for you, they would see Colton Price846, but in game you would appear
with the suffix.

Hey there, this appears to maybe be some sort of visual error. I looked up your account on Xbox Live and for me it shows the #846 after your account's gamertag. It could just be that it appears like that to you. Seems a little odd it isn't displaying correctly
for you.

I would take a screenshot and post it here, even though you'd be understandably cool with that for evidence... but I'm uncomfortable posting anything that would have your information here on the forums. Rest assured, I looked and for me it appears correctly.
Try restarting your Xbox or looking for any updates to your console, giving it some time or a boost like an update should correct the visual issues.

What do you mean? Are you talking about the number suffix at the end of a gamertag?

Hello PrussianBlue,

I suggest taking a look at this link here to see if your question has been answered: Xbox gamertag FAQ | Xbox Support

I believe you are referring to the Gamertag suffix. You are able to change your gamertag and potentially remove the suffix but it may cost and it has to be available. I'd also like to note that if you are playing an Xbox 360, your account will appear with numbers at the end as the Xbox 360 does not support the new Gamertag suffix system.

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The numbers will show as part of the gamertag in areas that aren't updated to work with the new policy. The only way to avoid that and not have a suffix at all is to choose a gamertag that no one else has.