Use Instant Tokens to refresh your Instagram Basic Display token.
To install:
composer require thoughtco/statamic-instagram-instanttokens
To use, add the token from your Instant Tokens account to your .env as follows:
INSTANT_TOKEN_URL=https://ig.instant-tokens.com/users/xxx/instagram/yyy/token?userSecret=zzzYou no longer need to add the Instagram APP_ID or SECRET as instructed here:
https://github.com/nineteen-2/statamic-instagram-basic-display-api