There are limits to the number of stocks you can have in a portfolio and across all portfolios.

Please provide screenshot showing the problem

By the way, if you want to ensure prices are updated, you can pull to refresh them by sliding your finger down on the screen and letting go.

I see the issue, we are not updating the indices as often as we should.  I am going to schedule a fix.  Thanks for reporting !

we have many topical newsletters you can subscribe to, check out the list here:

https://seekingalpha.com/account/edit_newsletters

You can also get a daily email on a set of  stocks you are interested in, or authors you follow.

All email alerts are configured here https://seekingalpha.com/account/user_settings

Our strategy is to make all dividend  (and other) functionality which we have on the web site also available on mobile.  It is going to take some time, but we have a team that is actively working on it.  Would love to hear your ideas of what else you want to see on the site

We are working on a fix for this issue

Are you referring to our mobile apps ? website ?

We fixed a notification issue with the 3.10.6 release currently in slow rollout,  If you uninstall and reinstall the app from the store you will receive the new version,  Older notifications may still fail to open.

We don't have this information available on Seeking Alpha at this time.