Help center support eXpress
We've collected answers to popular questions to make eXpress easy and convenient to use. Didn't find the answer to your question? Contact our support team.
- Welcome to eXpress
- eXpress Support
- Introducing eXpress & Glossary
- Installation & Updates & Requirements
- Registering & Logging In
- User Profile
- User Profile: General Info
- Personal Account | Public Profile
- Corporate Profile
- Guest Profile
- Profile Data
- Statuses
- User Profile Security
- Corporate Account Logout
- Changing the Login (E-mail) of a Corporate Account
- Deleting Account
- Profile Troubleshooting
- Chats, Channels & Threads
- Contacts
- Tags & Tabs
- Files
- Calls & Conferences
- Push Notifications & Counters
- Fixing Background Work on Mobile
- Bots & SmartApps
- Diagnostics & Logs & Cache
- Admin Panel
- Jira Support Portal
- Technical Support for Admins
- Database Modifications Policy
- eXpress Documentation
- Privacy Policy
Profile Troubleshooting
- Cannot Change Phone Number or Lost Access to the Previous Number
- “Phone number is already used. Unlink it from another account to use it in this one” Error
- “An error has occurred. Try again later” When Changing or Adding Phone Number
- Low Quality Avatar when Uploaded via Corporate Portal (OWA)
Cannot Change Phone Number or Lost Access to the Previous Number 
If the ability to manage the phone number by your own is disabled by administrator, or you lost access to the previous phone number, follow these steps to change it:
| You still have access to the previous number (corporate account) |
Sign in to your corporate account with the old number, go to Settings (avatar button) > go to your profile > Corporate Information or Actions with profile > Leave the server.
|
| You've lost access to the previous number |
|
“Phone number is already used. Unlink it from another account to use it in this one” Error 
If you are trying to add or change a phone number in the profile settings and see the error “Phone number is already used. Unlink it from another account to use it in this one” this means the number is linked to another account. In most cases, this is an extra personal profile, created during phone number registration. A phone number in eXpress can only be associated with one profile.
How to Resolve This?
To resolve this issue, you must delete one of the profiles — choose the one with less critical data.
| Option | Steps |
|---|---|
|
RTS
|
It will delete the personal account’s chat history:
|
|
Lite
CTS
eCTS
|
It will delete the corporate account’s chat history:
|
How to Avoid This Issue in the Future?
To avoid number conflicts, use your phone number to log in if it has already been registered — even for a public profile. This preserves chat history.
“An error has occurred. Try again later” When Changing or Adding Phone Number 
If you receive this error when changing or adding a mobile phone number, please contact the eXpress Support.
Low Quality Avatar when Uploaded via Corporate Portal (OWA) 
If you change your avatar via your corporate system/the Microsoft Exchange web portal (Outlook Web Access, OWA), it may appear in low quality in the app.
Why eXpress Displays Lower Quality Avatars?
The reason lies in the avatar synchronization specifics:- Microsoft Exchange (OWA) stores the original image in high resolution.
- During synchronization with Active Directory, the photo is converted into the
thumbnailPhotoattribute (JPG format, max. size 10 KB) with quality loss due to dual compression (resolution and detail reduction). - The app retrieves the already compressed image from Active Directory, resulting in reduced avatar clarity.
How to Improve Avatar Quality?
To ensure proper avatar display in the app:
- Do not use OWA to update corporate avatars.
- Upload new avatar via profile settings in the app.
- Ask your organization’s administrator or support team to upload the image directly to Active Directory using administrative tools — this preserves the original quality.