My personal opinion, this site pom.m-hash.com is working...
The email system is working this way:
1. type pin and click unlock
2. check your email (i always get it, if you do not, check spam or other incoming folder!)
3. click the link what is included in email (it could pop up new browser page, you have to use that "new" page)
4. now you able to modify or adjust your settings/payouts etc... BUT you have to type pin AGAIN on the "pin field"
5. if you made modify and want to accept it, type AGAIN your pin
6. should be ok modify
this methode is created to our security, not to disturb users and make pool life complicated
I think wallet mainetenance is in progress, same as bitrex page.
I know one is pool and the other is trade site, but the new wallet is out in this week, they have to update/upgrade system as shown in bitrex.
I have account on "pom..." an i have never been issues, and payment and workers are fine.
sorry my bad english
Have nice day!