As always never follow any link in an email. If you have questions, use you usual agency bookmark and check.
If you use the same password on two or more agencies - DON'T

"On 2019-02-21 Mostphotos noticed some suspicious activities and potential account theft. While logged in at
www.mostphotos.com some of our contributing members received a message in their inbox to provide their emailaddress and password. This message was not sent by Mostphotos but from a scammer/phisher (someone trying to get hold of another persons information).
The scam has been handled and even though only a small number of account may have been effected we have temporarily disabled the possibility to message other users on mostphotos.com. The possibility to message other users will be switched back on once we have looked further into the matter.
From what the suspicious activities show, the main reason for this infringement is to try and make withdrawal requests to paypal accounts not own by the contributor (dont worry, we have not accepted any withdrawal with suspicious activity!). To ensure the safety of your accounts we have asked you to change the password to your account. But since we can not exclude the risk of a hacker trying to get hold of your personal data we would also recommend that you change password on other services as well.
We are constantly looking for ways to improve your accounts security and your experience on mostphotos.com. We will shortly release an improved security check when changing password, e-mailaddresses, making withdrawals requests and changing payment methods.
If you have any question about this matter you are always welcome to contact us at
[email protected]!"
Ha Ha these people at Mostphotos are lost. You can't change the password, their site doesn't send the email.