We've made a change to how the Ranger class feature "Favored Enemy" is implemented on D&D Beyond. This has been done to resolve an issue where the feature wasn't functioning correctly.
All of your Favored Enemies will now display correctly on your character sheet.
Additionally, the OCF (Optional Class Feature), presented in the Tasha's Cauldron of Everything sourcebook, "Favored Foe" was unable to function correctly, due to the way Favored Enemy had been implemented. This change also resolved that issue.
IMPACT ON YOUR RANGER CHARACTER(S)
1st-5th level.
You will need to reselect the additional language that is associated with your Favored Enemy.
6th+ level.
As well as reselecting the additional language associated with your 1st level pick of Favored Enemy, you will need to reselect the favored enemy and associated language granted at 6th level and 14th level (if relevant).

WHY HAS THIS HAPPENED?

Since the early days of D&D Beyond, the dev teams have worked hard to build tools that allow us to model all of the content in the Dungeons & Dragons game. There have been limitations to those tools however, especially earlier on in beta, when the core classes were built.
One of the more frequent issues reported to us over the lifetime of D&D Beyond is, "My Ranger character levelled up to 6th, selected their new Favored Enemy and now I can't see my 1st level pick on my character sheet."
When resolving issues, we have always stuck to a principle of being 100% non-destructive to characters, meaning that we won't implement a fix, if doing so would break someone's character in any way. We have always felt this was important - that our users need to be able to trust that their characters are safe with us.
With this Ranger issue, we spotted an opportunity to resolve the problem, using the more up-to-date tools, but with a small cost - having to reselect some of the options for that feature. We believe that this cost was worthwhile, to resolve the issue, as previously players of Ranger characters couldn't see the options that had been selected anyway.
WHAT ABOUT FIXING OTHER CLASSES/FEATURES?
Our intention and commitment remains that your characters are safe on D&D Beyond. This does not mean that we're going to be regularly making changes that invalidate your current character choices. However we felt the positives of this update far outweighed the negatives for this change. We hope we gave enough warning before the change that people were ready.
Depending on the feedback from the community on this issue resolution, we may take a look at other issues that could be resolved for a similar impact. Please let us know how you feel!

I think this is a great way to resolve this issue. I'd encourage you to continue improving your product if the cost of doing so is this minimally invasive on your users time.
The instructions on what to do were straight forward and worked well. This is how you improve a good system. Thanks!
> always felt this was important - that our users need to be able to trust that their characters are safe with us.
Thats indeed great, and I'm glad you prioritise this!
Cool!
Please, please, please add the Primal Companion option to the Beast Master archetype! Please.
And thank you for the Favored Foe fix, although I still get a "scalevalue - No level scale data available" error in the description.
If only all the world's problems were that easy to fix! I think your customer communication was spot-on, and please do make other improvements like this even if it requires some user-end actions.
I'm all for changes that increase accuracy of the information for the character. Re-selecting a couple items is definitely a small enough cost that the benefit outweighs it. Please keep fixing and improving.
I come back after a month, and you fix a few bugs, good work
I have many characters to update.
However I would rather take the time to tweak this and have it work, than have it stay as it was not working.
Great work, keep it up.
Thank you for this! Is there anything like this for FG?
Noise! Keep up the good work
Favored Foe is still showing scalevalue - No level scale data available. Is that expected?
Hello - This is still not working. There are two issues:
1. Goblin is not listed in the list of Favored Enemies
2. If I select Dragon for Favored Enemy, the option of Dragonic for language is not in the list.
I tried all the actions suggested in this thread, and, a couple of weeks ago, I posted about #2. I hope you can help me before my next gaming session in January. Here is a link to the character sheet: https://www.dndbeyond.com/profile/mix_pix72/characters/36422143/builder#/class/manage
Thanks for your help.
Thanks Stormknight -- I figured that out too. User error on my part. Thanks again.
I am going to make a character