AutoSPF updates your current SPF record with an equivalent one that overcomes the limitations of SPF lookups. While certain services might issue warnings or errors if they don't find their specific 'include' directive in the TXT record, these alerts often stem from a basic check of the TXT record's contents rather than a verification of whether their IP addresses are actually validated against the SPF record. 

Therefore, these warnings or errors can typically be disregarded.