Do I need a separate encryption license for the Cisco 891F?

Question

Cisco

Is Cisco 891F. In terms of functionality, encryption may be there, but it was delivered without it. shipped to Russia... But you don't need to buy a separate license. To enable encryption, you need to change the firmware.
There was a firmware c800-universalk9_npe-mz.SPA.155-3.M4a.bin installed c800-universalk9-mz.SPA.154-3.M8.bin
Now Cisco swears at the limitation of the license term, although it seems to be not required there.
Question. What will happen in 8 weeks and 3 days?
while loading it says this

*Jan  2 00:00:00.711: %LICENSE-6-EULA_ACCEPT_ALL: The Right to Use End User License Agreement is accepted
*Jan  2 00:00:00.935: %IOS_LICENSE_IMAGE_APPLICATION-6-LICENSE_LEVEL: Module name = c800 Next reboot level = advipservices and License = No valid license found

Router#sh lic
Index 1 Feature: advipservices
        Period left: 8  weeks 3  days
        Period Used: 1  hour  51 minutes
        License Type: EvalRightToUse
        License State: Active, Not in Use, EULA accepted
        License Count: Non-Counted
        License Priority: Low
Index 2 Feature: advsecurity
Index 3 Feature: ios-ips-update
        Period left: Not Activated
        Period Used: 0  minute  0  second
        License Type: EvalRightToUse
        License State: Active, Not in Use, EULA not accepted
        License Count: Non-Counted
        License Priority: None
Index 4 Feature: MEM-8XX-512U1GB
        Period left: 8  weeks 3  days
        Period Used: 21 hours 0  minute
        License Type: EvalRightToUse
        License State: Active, In Use
        License Count: Non-Counted
        License Priority: Low

Answer 1

Better than asking, you would read the license agreement or the terms of the contract under which you acquired the rights to use the software and hardware. Who allowed you to change the firmware in violation of zoning?
What you think is far from the fact that it is so.