My file replication ratio is decreasing

[O_b_O]

My file replication ratio is decreasing and not increasing again. This even if I still have SCs allocated.
As some are below 1, I understand that if I no longer have them locally they are lost.
Is that correct?
Thanks

[O_b_O]

Hi,
So After some tests:
I tried to download files with with ratio > 1 -> ok with ratio < 1 -> failed

So my story:

• I upload files to backup it
• I paid by allowing SCs for the service
• I reach a ratio > 2.2 for all files
• I close SIA UI for few days
• I open it again
• Ratio of some files is below 1

My understanding was if a node left network and don't respect the contract I got SCs back + collateral and the network try to find other node to keep ratio high enough.

My mistake was to close the sia-ui for few days, but it isn't very useful to keep a service always up if you just backup files.
I have a node for "selling" space but for each contract I paid for collateral.

Conclusion I paid to backup I paid to share and my backup isn't reliable.

I think something is wrong in the model.

Regards