For those still here even though this topic is old, this currently is happening on all sorts of devices, and there is nothing you can do but wait until it is fixed.

ceebee* wrote:

Hi folks!

Our team is aware of issues impacting My Classes and My Stuff pages for some Scratchers. As we work to alleviate these issues, these features may be temporarily unavailable:
- Discussion forums
- Profile comments

Thank you for your patience as we work on these issues. Stay tuned for more information.
(src)

han614698 wrote:

For those still here even though this topic is old, this currently is happening on all sorts of devices, and there is nothing you can do but wait until it is fixed.

ceebee* wrote:

Hi folks!

Our team is aware of issues impacting My Classes and My Stuff pages for some Scratchers. As we work to alleviate these issues, these features may be temporarily unavailable:
- Discussion forums
- Profile comments

Thank you for your patience as we work on these issues. Stay tuned for more information.
(src)

As far as I can tell, it mostly happens on school-managed devices(but there are exceptions. Citation: Me).
As far as I can also tell, the bugs are mostly fixed.

However, Scratch is a little bit slower

Now,
The default Studio picture is the default PFP
I can't filter studios in mystuff
Quotes take a while to go into the text box

When you type a comment without sending, the font is bigger/different

The home page is now empty, mostly.