Discourse has announced they will be performing scheduled maintenance on the server hosting Arduino Forum during the following period:
2023-08-02 12:00 AM - 2023-08-02 12:00 PM UTC
Or if you prefer 24-hour time format:
2023-08-02 00:00 - 2023-08-02 12:00 UTC
At some point during this maintenance period, the forum may be in a "read only" state. During this time, the forum content will continue to be available, but attempting any operation that would require a "write" to the database will be blocked, as communicated by the appearance of a "An error occurred: The site is in read only mode. Interactions are disabled." dialog:

The read only state is expected to last less than 10 minutes.