Sermepa/Callback. Rule Unable to get a data value

Hello everyone,
I´ve been reading mayor issues and do not find something similar to this, so here I go...

I´m using Commerce 7.x-1.11 y Commerce Sermepa/Redsys Payment Method 7.x-1.4

Everything works well on most registrations, but lately we notice some problems in some checkout completions.

We receive the TPV email with the valid operation data and Problems are this, sometimes comes together, sometimes just one ot this.:
- Clients do not receive the completion email
- Admin do not receive a notification email
- Stock is not decrease
- Registration is not complete

All this errors are related to rules disfunction and we find this logs and messages about sermepa callback:

....sermepa/callback/6239
Unable to get a data value. Error: Invalid data value given. Be sure it matches the required data type and format.

....sermepa/callback/6239
Unable to evaluate action commerce_registration_set_state.

I include image of the rules messages and the commerce product error and Php serialization failure that we think is all related.

As I told you at the begining, our website is working well most of the times, but this error comes up on some occasions and disturb the normal use of our website.

Thanks in advance