Zoho books SPF record not recognized anymore

Zoho books SPF record not recognized anymore

Hi, 

Since a few month zoho books doesn't recognized my spf records anymore. I've send numerous emails to support but they just say "please contact your domain provider". It's cloudflare and we have checked with them and they say it's working perfectly on their site. We have checked on severall spf checker websites like https://dmarcly.com/tools/spf-record-checker and they all say it works correctly. 

I also got google spf, zoho desk and zoho.eu included and those work perfect. It's just the books spf that refuses to be reconized. Before it was just a notification, since yesterday it acutally sends emails from message-service@eu-sender.zohobooks.com which is horrible. 

Here is my spf : 

"v=spf1 include:_spf.google.com include:eu-sender.zohobooks.com include:zoho.eu include:eu-sender.zohodesk.com ~all"

I've also tried this version to limit to 10 records : 
"v=spf1 include:_spf.google.com include:eu-sender.zohobooks.com include:spf.zoho.eu include:eu-sender.zohodesk.com ~all"

I've also tried this version just to be sure : 
"v=spf1 include:_spf.google.com include:eu-sender.zohobooks.com include:spf.zoho.eu include:eu-sender.zohodesk.com ~all"

All 3 versions resolves in the following message "SPF record not found. Contact your domain provider."

Hope someone can help me on this, it's become urgent suddenly. 

Thank you in advance for your help. 
Marc