By default, the title of the block for post-checkout product recommendations enabled by the add-on Post-Checkout Upsell is "Anything else, maybe?".
If you want to use a different title for this block, changing it will not be a problem. The block title can be edited as a regular language label.
To edit the title of the post-checkout product recommendations block:
1. Go to the “Language labels” page of your store Admin area (Store setup > Translations). Make sure the Edit labels tab is open.
2. Search for the label ”Anything else, maybe?"
The label will be found.
3. Click on the label name and make the changes you require.
For the sake of example, we replaced the text "Anything else, maybe?" with "Would you also like...".
4. Save your changes.
Note that if your store supports more than one language, you will need to check the title text for each of the supported languages. See Translating Labels.