According to Maintenance and Release schedule Nextcloud 24 will be supported until 05/2023. This means 32-bit systems might continue to receive updates through May, but think of this as…
Nextcloud 24 will be supported with bug fixes through May of 2023
Time to Change Architectures
This is not surprising news, 32-bit support was already discontinued, but now it will not work at all as of Nextcloud 25.
Nextcloud 25 requires 64-bit systems
The requirement of 64-bit is now in the official documentation requirements for Nextcloud.
So long 32-bit, but thanks for the years of support!
Understandable if this is a surprise for some, but do be grateful you just had many years of support for your aging 32-bit system.